used before a singular noun to mean one of a group, when it is not a particular one
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
completely and without qualification; used informally as intensifiers
From this reading This is absolutely necessary to support combustion.
additionnounUS /əˈdɪʃən/
a component that is added to something to improve it
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
(quantifier) used with either mass or count nouns to indicate the whole number or amount of or every one of a class
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
used to join words or parts of a sentence that go together
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
at the same time that; because; in the way that
From this reading This is true of coal as well as of hydro-carbon oils.
used with a past participle to form the passive, or with -ing for continuous tenses
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
earlier than; in front of
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
To consume or be consumed by fire.
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
the act of burning something
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
showing who or what does the action
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
past form of “cause” — give rise to; cause to happen or occur, not always intentionally
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
chemicaladjectiveUS /ˈkeməkəl/
relating to or used in chemistry
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
coalnounUS /koʊl/
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
From this reading This is true of coal as well as of hydro-carbon oils.
COMBUSTIONnounUS /kəmˈbʌstʃən/
a process in which a substance reacts with oxygen to give heat and light
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
FUELSnounUS /ˈfjuːəlz/
plural of “fuel” — a substance that can be consumed to produce energy
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
gaseousadjectiveUS /ˈɡæsiəs/
existing as or having characteristics of a gas
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
hydro-carbon
Dictionary entry pending editorial verification. Tap Listen to hear the word.
From this reading This is true of coal as well as of hydro-carbon oils.
inside something, or within a place, period, or state
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
intoprepositionUS /ˈɪntuː/
moving to the inside of something
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
the form of “be” used with he, she, it, or a singular noun
From this reading This is true of coal as well as of hydro-carbon oils.
belonging to the thing or animal already mentioned
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
used to say something is necessary, or almost certainly true
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
characteristic of or existing by virtue of geographic origin
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
absolutely essential
From this reading This is absolutely necessary to support combustion.
not one and not the other of two
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
and not; used after a negative to add a second negative
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
belonging to, or connected with, somebody or something
From this reading This is true of coal as well as of hydro-carbon oils.
oilsnounUS /ɔɪlz/
plural of “oil” — a slippery or viscous liquid or liquefiable substance not miscible with water
From this reading This is true of coal as well as of hydro-carbon oils.
oxygennounUS /ˈɑːksədʒən/
a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
petroleumnounUS /pəˈtroʊliəm/
a dark oil consisting mainly of hydrocarbons
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
put into a certain place or abstract location
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
the territory occupied by one of the constituent administrative districts of a nation
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
substancesnounUS /ˈsʌbstənsəz/
plural of “substance” — the real physical matter of which a person or thing consists
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
of the kind already mentioned
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
the activity of providing for or maintaining by supplying with money or necessities
From this reading This is absolutely necessary to support combustion.
used before a noun that is already known, already mentioned, or the only one of its kind
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.
the people, animals, or things already mentioned, as the subject
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
used for a person or thing that is near, or that has just been mentioned
From this reading This is true of coal as well as of hydro-carbon oils.
used before the base form of a verb to make the infinitive
From this reading This is absolutely necessary to support combustion.
consistent with fact or reality; not false
From this reading This is true of coal as well as of hydro-carbon oils.
an organization of employees formed to bargain with the employer
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
(often used as a combining form) in a good or proper or satisfactory manner or to a high standard (“good” is a nonstandard dialectal variant for “well”)
From this reading This is true of coal as well as of hydro-carbon oils.
used to talk about the future, or about willingness
From this reading FUELS AND COMBUSTION All fuels must be put into a gaseous state before they will burn.
in the company of; together with
From this reading Burning is caused by the chemical union of oxygen with such substances as will burn.
not having, not using, or not accompanied by
From this reading Neither coal nor petroleum will burn in its native state, without the addition of oxygen.