zonaryadj.
/ˈzəʊn(ə)ri/, U.S. /ˈzoʊnəri/ 1. Having the form of a zone or girdle: applied to the placenta in certain mammals, as the Carnivora, forming a broad girdle round the chorion.
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the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > membranes, etc., of embryo or fetus > [adjective] > placenta
placentary1734
placental1785
diffuse1856
aplacental1859
zonary1881
1881 St. G. Mivart Cat 472 Though the Rodents have a deciduate placenta, it is never zonary.
2. Occurring in a zone or zones, i.e. within definite limits of depth (see zone n. 7).
This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2022).
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adj.1881- combined exercise
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