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definition of the word
acrania
by the Wiktionnary
acrania
(
physiology
)
Partial or total absence of the
skull
.
(
zoology
)
The lowest group of
Vertebrata
, including the
amphioxus
, in which no skull exists.
“
acrania
” in
Webster’s Revised Unabridged Dictionary
, G. & C. Merriam, 1913.
Categories
:
Webster 1913
|
Physiology
|
Zoology
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