cot·y·le·don
Audio Help [kot-l-eed-n] Pronunciation Key
—Related forms
Audio Help [kot-l-eed-n] Pronunciation Key –noun Botany.
| 1. | the primary or rudimentary leaf of the embryo of seed plants. |
| 2. | Anatomy. any of several lobules of the placenta. |
[Origin: 1535–45; < L: navelwort < Gk kotyléd
n a plant (prob. navelwort), lit., a cuplike hollow, deriv. of kotýlé cup
]
n a plant (prob. navelwort), lit., a cuplike hollow, deriv. of kotýlé cup
] —Related forms
cot·y·le·don·al, cot·y·le·don·ar·y
Audio Help [kot-l-eed-n-er-ee] Pronunciation Key, cot·y·le·don·ous, adjective
Audio Help [kot-l-eed-n-er-ee] Pronunciation Key, cot·y·le·don·ous, adjective | Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006. |
cotyledon
To learn more about cotyledon visit Britannica.com
| © 2008 Encyclopædia Britannica, Inc. |
| cot·y·le·don
Audio Help (kŏt'l-ēd'n) Pronunciation Key
n.
[Latin cotylēdōn, navelwort, from Greek kotulēdōn, from kotulē, hollow object.] cot'y·le'don·ar'y (-ēd'n-ěr'ē), cot'y·le'don·al (-ēd'n-əl), cot'y·le'do·nous (-ēd'n-əs) adj. |
| The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2006 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
| cotyledon | |
noun | |
| embryonic leaf in seed-bearing plants |
| WordNet® 3.0, © 2006 by Princeton University. |
| cotyledon
Audio Help (kŏt'l-ēd'n) Pronunciation Key
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. |
| The American Heritage® Science Dictionary Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. |
cotyledon cot·y·le·don (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.
| The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. |
Main Entry: cot·y·le·don
Pronunciation: "kät-&l-'Ed-&n
Function: noun
1 : a lobule of amammalian placenta
2 : the first leaf or one of the first pair or whorl of leaves developed by the embryo of a seed plant or of some lower plants (as ferns) —cot·y·le·don·ary /-'Ed-&n-"er-E/ adjective
| Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc. |
Cotyledon
A*cot`y*le"don\ (#; 277), n. [Gr. 'a priv. + ? anything cup-shaped. See Cotyledon.] (Bot.) A plant which has no cotyledons, as the dodder and all flowerless plants.| Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc. |
cotyledon
cotyledon: in CancerWEB's On-line Medical Dictionary
| On-line Medical Dictionary, © 1997-98 Academic Medical Publishing & CancerWEB |
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