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Pertaining to herpetology.

One versed in herpetology, or the natural history of reptiles.

Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; -- opposed to homologous; as, heterologous organs. Heterologous stimulus. (Physiol.) See under Stimulus. -- Heterologous tumor (Med.), a tumor differing in structure from the normal tissues of the bo…

Pertaining to hierology.

One versed in, or whostudies, hierology.

Pertaining to histology, or to the microscopic structure of the tissues of living organisms. -- His`to*log"ic*al*ly, adv.

One versed in histology.

Relating to that kind of homology or symmetry, the mathematical conception of organic form, in which all axes are equal. See under Promorphology.

The art of preaching; that branch of theology which treats of homilies or sermons, and the best method of preparing and delivering them.

Homology of the germinal layers.

The homology of metameres. See Metamere. Gegenbaur.

The correspondence of common descent; -- a term used to supersede homology by Lankester, who also used homoplasy to denote any superinduced correspondence of position and structure in parts embryonically distinct (other writers using the term homoplasmy). Thus, there is homogeny between the fore limb of a mammal and th…

Pertaining to homology; having a structural affinity proceeding from, or base upon, that kind of relation termed homology. -- Ho`mo*log"ic*al*ly, adv.

Pertaining to, or characterized by, homology; as, homologinic qualities, or differences.

nt in fundamental structure; resemblance in geometric ground form. See Homophyly, Promorphology.

The homology of parts arranged on transverse axes. Haeckel.

That form of homology due to common ancestry (phylogenetic homology), in opposition to homomorphy, to which genealogic basis is wanting. Haeckel.

In promorphology, pertaining to or exhibiting that kind of organic form, in which the stereometric ground form is a pyramid, with similar poles. See Promorphology.

A term suggested by Haeckel to be instead of serial homology. See Homotype.

A maker or vender of clocks and watches; one skilled in horology.