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amphicoelous

adjective am·phi·coe·lous
variants: or less commonly amphicelous or amphycoelous \-¦sēləs\
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Definition of amphicoelous

: biconcave —used of vertebrae (as those of certain reptiles) having both the anterior and posterior surfaces of the centrum concave

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Origin and Etymology of amphicoelous

Late Greek amphikoilos doubly concave, from Greek amphi- + koilos hollow

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