Part 180

TAXON´OMY, n. Classification; rational arrangement according to some scientific principle. Biotaxy.

TEC´TRICES, n. pl. Coverts; the smaller feathers, either of wing or tail, but especially of the former; tail-coverts being calypteria. (72, 73, 83.)

TEC´TRICES ALÆ, n. pl. Wing-coverts.

TEC´TRICES CAUDÆ, n. pl. Tail-coverts.

TEC´TRICES INFERIO´RES, n. pl. Under coverts. (73.)

TEC´TRICES PERVER´SÆ, n. pl. Median upper wing-coverts, of the secondary set.

TEC´TRICES SUPERIO´RES, n. pl. Upper coverts. (72.)

TEG´MINA, n. pl. Same as tectrices.

TEG´UMENT, n. Same as integument.

TELEOLOG´ICAL, a. Relating to teleology.

TELEOL´OGY, n. Doctrine of final causes; science of adaptation of means to ends.

TEM´PLES, n. pl. (44.) See TEMPORA.

TEM´PORA, n. pl. Temples; portion of sides of head between eyes and ears. (Scarcely used.)

TEN´DO or TEN´DON, n. Fibrous cord or band of attachment of muscle to bone or other parts; a “leader.” Tendo achillis, hamstring.

TENUIROS´TRAL, a. Slender-billed.

TERATOL´OGY, n. Science of monsters.

TE´RES or TE´RETE, a. Cylindrical and tapering; fusiform. Also, name of a muscle.

TER´GUM, n. Lower back, between interscapilium and uropygium. (Not well distinguished, and little used.) (59.)

TER´MINAL, a. At the end.

TERMINOLOG´ICAL, a. Relating to terminology.

TERMINOL´OGY, n. Science of calling things by their right names according to some determined principle. Nomenclature.

TER´TIALS, TER´TIARIES, n. pl. Large inner quills of wing growing from humerus or elbow. The two or three longer inner true secondaries (which see) are often incorrectly called tertials, especially when distinguished by size, shape or color from the rest of the secondaries. (76.)

TES´TIS, n.; pl. testes. Testicles; male organs secreting spermatozoa.

TETRADAC´TYLE, a. Four-toed.

THAL´AMUS, n. A certain tract of the brain.

THE´CA, n. Sheath.

THE´NAR, a. Palmar; plantar.

THE´ORY, n. Scientific speculation. Philosophical explanation. Result of inference from established principles.