cotyledon


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cotyledon
bean seed germinating

cot·y·le·don

 (kŏt′l-ēd′n)
n.
1. Botany A leaf of the embryo of a seed plant, which upon germination either remains in the seed or emerges, enlarges, and becomes green. Also called seed leaf.
2. Anatomy One of the lobules constituting the uterine side of the mammalian placenta, consisting mainly of a rounded mass of villi.

[Latin cotylēdōn, navelwort, from Greek kotulēdōn, from kotulē, hollow object.]

cot′y·le′don·ar′y (-ēd′n-ĕr′ē), cot′y·le′don·al (-ēd′n-əl), cot′y·le′do·nous (-ēd′n-əs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cotyledon

(ˌkɒtɪˈliːdən)
n
1. (Botany) a simple embryonic leaf in seed-bearing plants, which, in some species, forms the first green leaf after germination
2. (Zoology) a tuft of villi on the mammalian placenta
[C16: from Latin: a plant, navelwort, from Greek kotulēdōn, from kotulē cup, hollow]
ˌcotyˈledonal adj
ˌcotyˈledonary adj
ˌcotyˈledonous, ˌcotyˈledoˌnoid adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

cot•y•le•don

(ˌkɒt lˈid n)

n.
the primary or rudimentary leaf of the embryo of seed plants.
[1535–45; < Latin: navelwort < Greek kotylēdṓn literally, a cuplike hollow, derivative of kotýlē cup]
cot`y•le′don•al, cot`y•le′don•ar`y (-ˌɛr i) cot`y•le′don•ous, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

cot·y·le·don

(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 or absorb food that has been stored in the endosperm for eventual distribution to the growing parts of the embryo. Also called seed leaf. See more at dicotyledon, monocotyledon.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cotyledon

A seed leaf that provides food for an embryo plant.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cotyledon - embryonic leaf in seed-bearing plantscotyledon - embryonic leaf in seed-bearing plants
cataphyll - a reduced or scarcely developed leaf at the start of a plant's life (i.e., cotyledons) or in the early stages of leaf development
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

cotyledon

[ˌkɒtɪˈliːdən] Ncotiledón m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

cotyledon

nKeimblatt nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

cotyledon

[ˌkɒtɪˈliːdn] n (Bot) → cotiledone m
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in classic literature ?
These historians resemble a botanist who, having noticed that some plants grow from seeds producing two cotyledons, should insist that all that grows does so by sprouting into two leaves, and that the palm, the mushroom, and even the oak, which blossom into full growth and no longer resemble two leaves, are deviations from the theory.
It can be shown that plants most widely different in habit and general appearance, and having strongly marked differences in every part of the flower, even in the pollen, in the fruit, and in the cotyledons, can be crossed.
Finally, the torpedo stage somatic embryos formed small plantlets with distinct cotyledon leaves, apical shoots and root meristems (Fig.
The first germination count was carried out concomitantly with the germination test; the number of germinated seeds at first count was the number of germinated seeds considering those presenting protrusion of the cotyledon petiole, which was registered on the 21st DAS.
Callus biomass formation was initiated in cotyledon explants, and highest callus induction frequency (88%) was observed on MS media supplemented with 4.0 mg/L Thidiazuron (TDZ) plus 4.0 mg/L [alpha]-naphthalene acetic acid (NAA).
urticae was placed on each cotyledon inside a foam clip cage (BioQuip, Rancho Dominguez, California, USA) to restrict mite movement.
Placental shape, weight and number of cotyledon vary in different population, inspection and observation of it is important for anatomist, embryologist and medical professionals.
There will also be a small street market in Commercial Street provided by Cotyledon Markets, featuring a variety of craft and food stalls.
Most micropropagation protocols for Pinus species induce shoot growth from cotyledon explants of in vitro germinated seeds (ALONSO et al., 2006; ALVAREZ; MAJADA; ORDAS, 2009; ZHU et al., 2010; SOJICIC et al., 2012).
A cotyledon and the first true leaf to emerge, on each plant, were tagged and repeatedly scored for the incidence and severity of symptoms twice a week using a seven point scale (0 = no visible symptoms, 1 = small pinprick lesions, 2 = 120% of leaf surface covered with lesions, 3 = 2140%, 4 = 41-60%, 5 = 61=80% and 6= 81-100%).