used before a singular noun to mean one of a group, when it is not a particular one
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
used to join words or parts of a sentence that go together
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
one or some or every or all without specification
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
aphisnoun
type genus of the Aphididae: injurious to fruit trees and vegetables
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
applenounUS /ˈæpəl/
fruit with red or yellow or green skin and sweet to tart crisp whitish flesh
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
availableadjectiveUS /əˈveɪləbəl/
obtainable or accessible and ready for use or service
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
used with a past participle to form the passive, or with -ing for continuous tenses
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
used to introduce something that contrasts with what came before
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
a subdivision of a written work; usually numbered and titled
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
clovernounUS /ˈkloʊvər/
a plant of the genus Trifolium
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
belonging to or participated in by a community as a whole; public
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian times
From this reading If the study is made in the fall the species on turnips, corn or other plant or crop may be selected.
cropnounUS /krɑːp/
the yield from plants in a single growing season
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
cropsnounUS /krɑːps/
plural of “crop” — the yield from plants in a single growing season
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
unlike in nature or quality or form or degree
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
descend in free fall under the influence of gravity
From this reading If the study is made in the fall the species on turnips, corn or other plant or crop may be selected.
feedsnounUS /fiːdz/
plural of “feed” — food for domestic livestock
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
intended to be given to, or used by, somebody
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
to an extraordinary extent or degree
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
on condition that; in the event that
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
inside something, or within a place, period, or state
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
injuringverbUS /ˈɪndʒərɪŋ/
-ing form of “injure” — cause injuries or bodily harm to
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
insectnounUS /ˈɪnsekt/
small air-breathing arthropod
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
the form of “be” used with he, she, it, or a singular noun
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
lousenounUS /laʊs/
wingless usually flattened bloodsucking insect parasitic on warm-blooded animals
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
produced by a manufacturing process
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
used to say something is possible, or to give permission
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
multipliesverbUS /ˈmʌltəplaɪz/
third-person singular of “multiply” — combine by multiplication
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
belonging to, or connected with, somebody or something
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
many times at short intervals
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
touching and supported by a surface
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
used to join alternatives or possibilities
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
not the same one or ones already mentioned or implied
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
plantverbUS /plænt/
put or set (seeds, seedlings, or plants) into the ground
From this reading If the study is made in the fall the species on turnips, corn or other plant or crop may be selected.
PLANT-LOUSE
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
with speed
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
any of many shrubs of the genus Rosa that bear roses
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
sap-sucking
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
satisfactoryadjectiveUS /ˌsætəˈsfæktri/
giving satisfaction
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
selectedadjectiveUS /səˈlektɪd/
chosen in preference to another
From this reading If the study is made in the fall the species on turnips, corn or other plant or crop may be selected.
in a serious manner
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
speciesnounUS /ˈspiːʃiz/
(biology) taxonomic group whose members can interbreed
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
the season of growth
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
studiesnounUS /ˈstʌdiz/
plural of “study” — a detailed critical inspection
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
a detailed critical inspection
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
the plural of “this”: the people or things near, or just mentioned
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
used for a person or thing that is near, or that has just been mentioned
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
turnipsnounUS /ˈtɜːrnəps/
plural of “turnip” — widely cultivated plant having a large fleshy edible white or yellow root
From this reading If the study is made in the fall the species on turnips, corn or other plant or crop may be selected.
employed in accomplishing something
From this reading THE PLANT-LOUSE For this chapter any common species of plant-louse may be used.
varyverbUS /ˈveri/
become different in some particular way, without permanently losing one's or its former characteristics or essence
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
wheatnounUS /wiːt/
annual or biennial grass having erect flower spikes and light brown grains
From this reading If the study is made in the spring the louse on rose, apple, clover, wheat or any other crop may be used.
used to introduce a clause giving more about a thing just mentioned
From this reading The plant-louse or aphis is a sap-sucking insect which feeds and multiplies rapidly often seriously injuring crops.
used to talk about the future, or about willingness
From this reading The different species vary greatly but for these studies any available species will be satisfactory.
