O
chemical symbol, oxygen; [L.] oculus (eye); [L.] octarius (pint); opening.
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o-
symbol, ortho-.
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O antigen
see O antigen.
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O/P
oropharyngeal.
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O’Brien forceps
thumb-operated tissue forceps with blades tipped by long rat-teeth, two on one side, one on the other.
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O’Brien–Elschnig forceps
thumb-operated fixation tissue forceps similar to O’Brien forceps except that there is a slide catch that keeps the teeth locked together.
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O’Connor program
a breeding management system designed to ensure pregnancy in beef cows, based on a 63 day breeding season, having the cows in good body condition, the cows gaining weight during the breeding season, removal of sucking calves, and the use of fertile bulls.
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O2
oxygen.
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oak
see quercus.
o. buds see acorn.
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oat
member of the plant genus Avena in the family Poaceae.
oats see avena sativa.
o. grain seed of Avena sativa, and as ‘oats’ the favored grain for the feeding of horses. Too light in energy concentration for the heavy feeding of ruminants.
o. grass Avena pubescens. See also oatgrass.
o. hair calculi large, intestinal trichobezoars composed entirely of oat hairs and capable of... |