amphioxi

am·phi·ox·us

[am-fee-ok-suhs]
noun, plural am·phi·ox·i [am-fee-ok-sahy] , am·phi·ox·us·es.
Zoology, lancelet.

Origin:
1830–40; < Neo-Latin: literally, sharp at both ends < Greek amphi- amphi- + oxýs pointed

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World English Dictionary
amphioxus (ˌæmfɪˈɒksəs) [Click for IPA pronunciation guide]
 
n , pl -oxi, -oxuses
another name for the lancelet
 
[C19: from New Latin: both ends being sharp, from amphi- + Greek oxus sharp]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Amphioxi is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
American Heritage
Science Dictionary
amphioxus   (ām'fē-ŏk'səs)  Pronunciation Key 
See lancelet.
The American Heritage® Science Dictionary
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