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Part 143

A History of North American Birds · Spencer Fullerton Baird — chapter 143 of 222 · ~295 words · public domain

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DESMOGNATH´OUS, a. Having the palate bones united.

DES´MOID, a. Ligamentous.

DESQUAMA´TION, n. Peeling off.

DEX´TRAD, a. Toward the right side.

DEX´TRAL, a. Of or on the right side.

DI- (in composition). Twice; double.

DIAGNO´SIS, n. Distinctive knowledge. Also characterization, or a brief, precise, and exclusively pertinent definition. Diagnosis is nearly synonymous in this sense with definition; both differ from description in omitting non-essential particulars; but definition may include points equally applicable to some other object.

DIAGNOS´TIC, a. Distinctively and exclusively characteristic. Feathers are diagnostic of birds.

DIAPH´ANOUS, a. Transparent.

DI´APHRAGM, n. Midriff; musculo-tendinous partition between thorax and abdomen, rudimentary or wanting in birds.

DIAPHRAGMAT´IC, a. Pertaining to the diaphragm.

DIAPOPH´YSIS, n. Transverse process of a vertebra.

DIARTHRO´SIS, n. Movable articulation of bones in general.

DIAS´TASIS, DIAS´TEMA, n. A separation of bones, particularly the cranial ones, or of teeth, from each other.

DIAS´TOLE, n. Dilatation of the heart, alternating with the systole or contraction, occasioning pulsation.

DICHOT´OMOUS, a. Divided into pairs.

DICHROMATIC, a. Of two colors, as the “red” and “gray” plumages of Scops asio.

DIDAC´TYLOUS, a. Two-toed, as the ostrich.

DIGAS´TRIC, a. Double-bellied; name of a certain muscle.

DIGIT´IGRADE, a. Walking on the toes. Opposed to plantigrade.

DIGITUS, n.; pl. digiti. Digit. Finger or toe. (116.)

DIMORPHIC, a. Of two forms.

DIPLO´Ë, n. Light spongy network of bone between inner and outer surface of the skull.

DISC or DISK, n. Set of radiating feathers of peculiar shape or texture around the eye of owls.

DISSEPIMEN´TUM NAR´IUM, n. Same as septum narium, which see.

DIS´TAD, a. Toward an extremity.

DIS´TAL, a. Remote; situate at or near an extremity; opposed to proximal.

DIS´TICHOUS, a. Two-rowed; spread apart on either side of a middle line, as the hairs of a squirrel’s tail, or the tail-feathers of the Archæopteryx.

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