parietal placentation

noun
where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary
Hypernyms: ↑placentation

Useful english dictionary. 2012.

Look at other dictionaries:

  • Placentation — Plac en*ta tion, n. 1. (Anat.) The mode of formation of the placenta in different animals; as, the placentation of mammals. [1913 Webster] 2. (Bot.) The mode in which the placenta is arranged or composed; as, axile placentation; parietal… …   The Collaborative International Dictionary of English

  • Placentation — In biology, placentation refers to the formation, type and structure, or arrangement of placentas. The function of placentation is to transfers nutrients from maternal tissue to a growing embryo. Placentation is best known in pregnant female… …   Wikipedia

  • placentation — noun 1. the formation of the placenta in the uterus • Hypernyms: ↑bodily process, ↑body process, ↑bodily function, ↑activity 2. arrangement of the ovules in the placenta and of the placentas in the ovary • Hypernyms: ↑reproductive structure …   Useful english dictionary

  • pariétal — pariétal, ale, aux [ parjetal, o ] adj. et n. • 1541; du lat. paries, parietis « paroi » 1 ♦ Anat. Qui a rapport à la paroi d une cavité. Os pariétal : chacun des deux os plats constituant la partie moyenne et supérieure de la voûte du crâne. N.… …   Encyclopédie Universelle

  • free central placentation — n. Bot. a type of placenta structure in an ovary, in which the ovules cluster freely around a columnlike central placenta which is attached at the base of the ovary: cf. AXILE PLACENTATION, PARIETAL (sense 3) * * * …   Universalium

  • free central placentation — n. Bot. a type of placenta structure in an ovary, in which the ovules cluster freely around a columnlike central placenta which is attached at the base of the ovary: cf. AXILE PLACENTATION, PARIETAL (sense 3) …   English World dictionary

  • Lamiales — ▪ plant order Introduction   mint order of flowering plants, including 23 families and more than 23,000 species. The main families in the order are Lamiaceae, Verbenaceae, Plantaginaceae, Scrophulariaceae, Orobanachaceae, Acanthaceae,… …   Universalium

  • angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

  • Asparagales — ▪ plant order Introduction  the Asparagus or orchid order of monocotyledonous (monocotyledon) flowering plants, containing 16–24 families, 1,122 genera, and more than 26,000 species.  Asparagales contains many garden plants and several types of… …   Universalium

  • Gynoecium — A gynoecium (from Ancient Greek gyne , woman ) is the female reproductive part of a flower. The male counterpart is called an androecium . A gynoecium is composed of one or more pistils. A pistil may consist of a single free carpel, or be formed… …   Wikipedia

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