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That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b). protoxide of nitrogen, laughing gas, now called hyponitrous oxideNO. See under Laughing.

To combine with oxygen, as any elementary substance, in such proportion as to form a protoxide.

The lowest of the grand divisions of the animal kingdom.

Of or pertaining to the Protozoa. -- n.

Of or pertaining to the Protozoa.

One of the Protozoa.

One of the primary, or first-formed, segments of an embryonic arthropod.

Same as Malacopoda.

To draw out or lengthen in time or (rarely) in space; to continue; to prolong; as, to protract an argument; to protract a war.

Prolonged; continued. Protracted meeting,a religious meeting continued for many successive days. [U. S.] -- Pro*tract"ed*ly, adv. -- Pro*tract"ed*ness, n.

A protractor.

Capable of being protracted, or protruded; protrusile.

he act of delaying the termination of a thing; prolongation; continuance; delay; as, the protraction of a debate. A protraction only of what is worst in life. Mallock.

Drawing out or lengthening in time; prolonging; continuing; delaying. He suffered their protractive arts. Dryden.

One who, or that which, protracts, or causes protraction.

Adapted to persuade; hortatory; persuasive. [Obs.] Bp. Ward.

That may be protruded; protrusile. Darwin.

through a narrow orifice or from confinement; to cause to come forth. When . . . Spring protrudes the bursting gems. Thomson.

Capable of being protruded or thrust out; protractile; protrusive.

The act of protruding or thrusting forward, or beyond the usual limit.