allantoid

[ uh-lan-toid ]

/ əˈlæn tɔɪd /

adjective

Also al·lan·toi·dal

[al-uh n-toid-l] /ˌæl ənˈtɔɪd l/. allantoic.

noun

the allantois.

Nearby words

allantochorion, allantoic, allantoic sac, allantoic stalk, allantoic vesicle, allantoid, allantoid membrane, allantoidoangiopagous twins, allantoin, allantoinuria, allantois

Origin of allantoid

1625–35; < Greek allantoeidḗs, equivalent to allant- (stem of allâs sausage) + -oeidḗs -oid

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for allantoid

allantoid

/ (əˈlæntɔɪd) /

adjective

relating to or resembling the allantois

botany shaped like a sausage

noun

another name for allantois

Derived Forms

allantoidal (ˌælənˈtɔɪdəl), adjective

Word Origin for allantoid

C17: from Greek allantoeidēs sausage-shaped, from allas sausage + -oid

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for allantoid

allantoid

[ ə-lăn′toid′ ]

adj.

Of or having an allantois.

Shaped like a sausage.

n.

allantois