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Spontaneous generation; abiogenesis.

The primitive enteron or undifferentiated digestive sac of a gastrula or other embryo. See Illust. under Invagination.

Of or pertaining to an archdeacon. This offense is liable to be censured in an archidiaconal visitation. Johnson.

The science of architecture.

Pertaining to a master builder, or to architecture; evincing skill in designing or construction; constructive. "Architectonic wisdom." Boyle. These architectonic functions which we had hitherto thought belonged. J. C. Shairp.

The science of architecture.

One of the chief magistrates in ancient Athens, especially, by preëminence, the first of the nine chief magistrates. -- Ar*chon"tic, a.

The office of an archon. Mitford.

An archon's term of office. Gibbon.

The group including man alone.

Constriction or contraction of some natural passage, as in constipation from inflammation.

The act of bending or curving; incurvation; the state of being bent; crookedness. Coxe.

The act of drying, or the state of growing dry. The arefaction of the earth. Sir M. Hale.

A sand bath; application of hot sand to the body. Dunglison.

Division into areolæ. Dana.

A coating or overlaying with silver. [R.] Johnson.

A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness. Rayleigh and Ramsay.

Any one of the legendary Greek heroes who sailed with Jason, in the Argo, in quest of the Golden Fleece.

A genus of Cephalopoda. The shell is called paper nautilus or paper sailor.

Of or pertaining to the Argonauts.