单词 | os |
释义 | os1/ɒs![]() noun (plural ossa /ˈɒsə/) Anatomy A bone (used chiefly in Latin names of individual bones, e.g. os trapezium).In this group, the cortex of the os sacrum was destroyed and had a spongelike rather than compact appearance....
OriginLatin. os2/ɒs![]() noun (plural ora /ˈɔːrə/) Anatomy An opening or entrance to a passage, especially one at either end of the cervix of the womb.The distance between the internal and external os was measured both as a straight line and also as a curved line along the endocervical canal....
OriginMid 18th century: from Latin, 'mouth'. Os3symbol The chemical element osmium. OS4/əʊˈɛs![]() abbreviation 1(In calculating dates) Old Style. 2 Computing Open-source. 3 Computing Operating system. 4Ordinary Seaman. 5(In the UK) Ordnance Survey. 6(As a size of clothing) outsize. 7Out of stock. 8Overseas. |
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