Webster's Revised Unabridged Dictionary · 1913

Indefinite

Indefinite , adjective

[Latin indefinitus. See In- not, and Definite.]

1.
Not definite; not limited, defined, or specified; not explicit; not determined or fixed upon; not precise; uncertain; vague; confused; obscure; as, an indefinite time, plan, etc.
It were to be wished that... men would leave off that indefinite way of vouching, “the chymists say this,” or “the chymists affirm that.” — Boyle
The time of this last is left indefinite. — Dryden
2.
Having no determined or certain limits; large and unmeasured, though not infinite; unlimited; as, indefinite space; the indefinite extension of a straight line.
Though it is not infinite, it may be indefinite; though it is not boundless in itself, it may be so to human comprehension. — Spectator
3.
Boundless; infinite. [Rare]
Indefinite and omnipresent God, Inhabiting eternity. — W. Thompson (1745)
4.
(Botany) Too numerous or variable to make a particular enumeration important; -- said of the parts of a flower, and the like. Also, indeterminate.
Collocations (4)
Indefinite article (Grammar) , the word a or an, used with nouns to denote any one of a common or general class.
Indefinite inflorescence (Botany) , See Indeterminate inflorescence, under Indeterminate.
Indefinite proposition (Logic) , a statement whose subject is a common term, with nothing to indicate distribution or nondistribution; as, Man is mortal.
Indefinite term (Logic) , a negative term; as, the not-good.