Dictionary » Z » Zooid



noun, plural: zooids

(1) A cell capable of spontaneous movement and can live independently or apart from the parent organism.

(2) An animal or organism in inferior developmental stages; an organism in intermediate form.

(3) An organism from a colony forming group of animals, such as anthozoa, hydroidea and bryozoa in which their mouth and alimentary canal are not highly developed.


Of, pertaining to, relating to, or resembling an animal; zooidal.


Word origin: Greek zĂ´ion animal + from Greek -oeides, from eidos form

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Re: siphonophores

... Siphonophore the species you mention is Physalia physalis which is the only species that floats, the vast majority swim underwater. 1) The initial zooid arises from a fertilised egg, the rest of the colony is formed by budding which is a type of asexual reproduction. I have no idea the mechanisms ...

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by fumpledrumpskin
Sun Sep 15, 2013 3:08 pm
Forum: Zoology Discussion
Topic: siphonophores
Replies: 2
Views: 3764


Hi everyone, I'm Julia, a physicist/biochemist. I love all science! So bluebottles, or Portuguese men o' war, are not jellyfish but are colonies of zooids: polyps and medusae, So, this is really weird and awesome (like lots of biology!). I have some questions: 1. There are four different types of ...

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by Waylah
Mon Sep 02, 2013 8:23 am
Forum: Zoology Discussion
Topic: siphonophores
Replies: 2
Views: 3764

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