| os uteri internum | An elongated constriction at the junction of the body and cervix of the uterus. Synonym: isthmus uteri, Guyon's isthmus, orificium internum uteri, os uteri internum, ostium uteri internum. (05 Mar 2000) |
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| os vesalianum | The tuberosity of the fifth metatarsal bone sometimes existing as a separate bone. Synonym: vesalianum, Vesalius' bone. (05 Mar 2000) |
| os zygomaticum | A quadrilateral bone which forms the prominence of the cheek; it articulates with the frontal, sphenoid, temporal, and maxillary bone. Synonym: os zygomaticum, cheek bone, jugal bone, mala, malar bone, os malare, yoke bone, zygoma. (05 Mar 2000) |
| osage orange | <botany> An ornamental tree of the genus Maclura (M. Aurantiaca), closely allied to the mulberry (Morus); also, its fruit. The tree was first found in the country of the Osage Indians, and bears a hard and inedible fruit of an orangelike appearance. See Bois d'arc. Source: Websters Dictionary (01 Mar 1998) |
| osages | <ethnology> A tribe of southern Sioux Indians, now living in the Indian Territory. Source: Websters Dictionary (01 Mar 1998) |
| osar | <geology> See Os. Source: Websters Dictionary (01 Mar 1998) |
| osazone | The compound formed by certain sugars (e.g., glucose, galactose, fructose) with excess hydrazines, possessing two hydrazones on carbons 1 and 2 instead of only one at C-1, as in the ordinary hydrazone; osazone's formed with phenylhydrazine (phenylosazones) are used to characterise and identify certain sugars. Synonym: dihydrazone. (05 Mar 2000) |
| osche- | The scrotum. Origin: G. Osche (05 Mar 2000) |
| oscheal | <anatomy> Pertaining to the scrotum. (27 Sep 1997) |
| oscheitis | Inflammation of the scrotum. Origin: osche-+ G. -itis, inflammation (05 Mar 2000) |
| oschelephantiasis | An enlargement or elephantiasis of the scrotum. Origin: osche-+ elephantiasis (05 Mar 2000) |
| oscheohydrocele | Scrotal hydrocele. Origin: oscheo-+ G. Hydor, water, + kele, tumour (05 Mar 2000) |
| oscheoplasty | Synonym: scrotoplasty. Origin: oscheo-+ plastos, formed (05 Mar 2000) |
| oscillancy | The state of oscillating; a seesaw kind of motion. Source: Websters Dictionary (01 Mar 1998) |
| oscillaria | <botany> A genus of dark green, or purplish black, filamentous, fresh water algae, the threads of which have an automatic swaying or crawling motion. Synonym: Oscillatoria. Origin: NL, fr. L. Oscillare to swing. Source: Websters Dictionary (01 Mar 1998) |