Part 130

ABDUC´TION, n. Act of carrying a limb away from the axis of the body. Opposed to adduction. Muscles so acting are abductors.

ABER´RANT, a. Deviating from ordinary character.

ABNOR´MAL, a. Of highly unusual, extraordinary character; deformed; monstrous.

ABOR´TIVE, a. Suppressed; remaining or becoming imperfect. The nostrils of the cormorant are abortive.

ACAR´IDES, n. pl. Certain external parasites.

ACCIP´ITRINE, a. Hawk-like; belonging to Accipitres.

ACCLIMATIZA´TION, n. Naturalization, with reference to the effect of a new country upon the economy.

ACETAB´ULUM, n. Pelvic cavity for reception of head of femur.

ACHIL´LIS (tendo), n. Tendon of principal extensor muscle of foot.

ACIC´ULAR, a. Needle-shaped; sharp and very slender.

ACRODAC´TYLUM, n. Top of toes collectively. (117.) (Little used.)

ACRO´MION, n. Process of the scapula.

ACROPO´DIUM, n. Entire upper surface of foot. (113.) (Little used.)

ACROTAR´SIUM, n. Front of tarsus, corresponding to the human instep. (104.) (Little used).

ACU´MINATE, a. Tapering gradually to a point.

ACUTE´, a. Sharp-pointed.

AD- (in composition). To; towards.

ADDUC´TION, n. Act of drawing a limb toward axis of body. Muscles so acting are adductors. Compare ABDUCTION.

AD´ENOID, a. Glandular; glandiform.

AD´IPOSE (tissue), a. for n. Cellular tissue holding fat in special vesicles.

ADOLES´CENCE, n. Youth.

ADRE´NAL (body), a. for n. A small organ capping the kidney.

ADULT´, a. or n. Grown to full size; mature.

ÆGITHOGNATH´OUS, a. Having the palate bones disposed as in a sparrow or other passerine bird.

AF´FERENT, a. Bringing to or towards. Opposed to efferent.

AFFINED´, a. Joined or related by affinity.

AFFIN´ITY, n. Quality of direct relation; conformity; agreement. Morphological affinity implies relationship by genetic descent; teleological affinity cannot be properly predicated.

AF´TER-SHAFT, n. Scape or stem of the supplementary plume springing from many feathers, or, oftener, such plume itself.