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Not having arrived at puberty; immature. In impuberal animals the cerebellum is, in proportion to the brain proper, greatly less than in adults. Sir W. Hamilton.

The early, immature form of any animal when more or less of a metamorphosis takes place, before the assumption of the mature shape.

Having a pouch for carrying the immature young; of or pertaining to the Marsupialia.

rpus callosum very small, in being implacental, and in having their young born while very immature. The female generally carries the young for some time after birth in an external pouch, or marsupium. Called also Marsupiata.

Not adult; immature.

Having the quality of nonage; being a minor; immature. W. Browne.

Producing young while in the immature or larval state; -- said of certain insects, etc.

An immature comatula when it is still attached by a stem, and thus resembles a Pentacrinus.

Nascent cortex, or immature cellular bark.

An unfledged bird; hence, something immature or unfinished. Ford.

Hence: Unprepared for use or enjoyment; immature; unripe; unseasoned; inexperienced; unpracticed; untried; as, raw soldiers; a raw recruit. Approved himself to the raw judgment of the multitude. De Quincey.

Physically weak; not hardly or able to endure hardship; immature; effeminate. The tender and delicate woman among you. Deut. xxviii. 56.

Done or occurring before the proper time; premature; immature; as, a timeless grave. [Obs.] Must I behold thy timeless, cruel death Shak.

Not having arrived at adult age, or at years of discretion; hence, raw; green; immature; boyish; childish. [Obs.] I myself have loved a lady, and pursued her with a great deal of under-age protestation. J. Webster.

Not fledged; not feathered; hence, not fully developed; immature. Dryden.

A large vessel, cistern, or tub, especially one used for holding in an immature state, chemical preparations for dyeing, or for tanning, or for tanning leather, or the like. Let him produce his vase and tubs, in opposition to heaps of arms and standards. Addison.