cotyledon
[ kot-l-eed-n ]
/ ˌkɒt lˈid n /
noun Botany.
the primary or rudimentary leaf of the embryo of seed plants.
Anatomy.
any of several lobules of the placenta.
Origin of cotyledon
1535–45; < Latin: navelwort < Greek
kotylēdṓn a plant (probably navelwort), literally, a cuplike hollow, derivative of
kotýlē cup
OTHER WORDS FROM cotyledon
Words nearby cotyledon
cotula,
cotunnite,
coturnix,
cotwal,
coty,
cotyledon,
cotyloid,
cotyloid cavity,
cotyloid joint,
cotylosaur,
cotype
Example sentences from the Web for cotyledonary
Modification of placenta from simple diffused to cotyledonary form.
The union between the cotyledonary leaves may continue after the young plant begins to germinate.
British Dictionary definitions for cotyledonary
cotyledon
/ (ˌkɒtɪˈliːdən) /
noun
a simple embryonic leaf in seed-bearing plants, which, in some species, forms the first green leaf after germination
a tuft of villi on the mammalian placenta
Derived forms of cotyledon
cotyledonous or cotyledonoid, adjective cotyledonal, adjective cotyledonary, adjectiveWord Origin for cotyledon
C16: from Latin: a plant, navelwort, from Greek
kotulēdōn, from
kotulē cup, hollow
Medical definitions for cotyledonary
cotyledon
[ kŏt′l-ēd′n ]
n.
One of the lobules constituting the uterine side of the placenta, consisting mainly of a rounded mass of villi.
A leaf of the embryo of a seed plant, which, upon germination, either remains in the seed or emerges, enlarges, and becomes green; a seed leaf.
Scientific definitions for cotyledonary
cotyledon
[ kŏt′l-ēd′n ]
A leaf of the embryo of a seed-bearing plant. Most cotyledons emerge, enlarge, and become green after the seed has germinated. Cotyledons either store food for the growing embryo (as in monocotyledons) or absorb food that has been stored in the endosperm (as in other angiosperms) for eventual distribution to the growing parts of the embryo. Also called seed leaf See more at eudicotyledon monocotyledon.