| free-central | A placentation in which the ovules are borne on a free-standing central placenta within the ovary. (09 Oct 1997) |
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| long central artery | <anatomy, artery> Long posterior ciliary artery, one of two branches of the ophthalmic running forward between the sclerotic and choroid coats to the iris, at the outer and inner margins of which they form by anastomosis two circles. Synonym: arteria ciliaris posterior longa, medial striate artery. (05 Mar 2000) |