a plural of centrum.
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noun, plural centrums, centra [sen-truh] .
a center.
Anatomy, Zoology. the body of a vertebra.
Mycology. collectively, all the structures enclosed within the ascocarp of a fungus.

1850–55; < Latin; see center

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World English Dictionary
centra (ˈsɛntrə)
a plural of centrum

centrum (ˈsɛntrəm)
n , pl -trums, -tra
the main part or body of a vertebra
[C19: from Latin: centre]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

centrum cen·trum (sěn'trəm)
n. pl. cen·trums or cen·tra (-trə)

  1. A center of any kind, especially an anatomical center.

  2. The major part of a vertebra, exclusive of the bases of the neural arch.

The American Heritage® Stedman's Medical Dictionary
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Example sentences
The centra were rinsed thoroughly in distilled water and then soaked in concentrated formic acid for four min.
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