Definition of unionoid in English:

unionoid

adjective ˈjuːnɪənɔɪd

Zoology

Of or relating to the family Unionidae of freshwater mussels, or the order Unionoida in which they are included; unioniform.

noun ˈjuːnɪənɔɪd

Zoology

A mollusc of the family Unionidae or order Unionoida; a freshwater mussel.

Origin

Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist. From scientific Latin Unio unio + -oid, with insertion of -n- after classical Latin ūniōn-, ūniō, etymon of the first element.

Definition of unionoid in US English:

unionoid

adjectiveˈjuːnɪənɔɪd

Zoology

Of or relating to the family Unionidae of freshwater mussels, or the order Unionoida in which they are included; unioniform.

nounˈjuːnɪənɔɪd

Zoology

A mollusc of the family Unionidae or order Unionoida; a freshwater mussel.

Origin

Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist. From scientific Latin Unio unio + -oid, with insertion of -n- after classical Latin ūniōn-, ūniō, etymon of the first element.

词汇	unionoid
释义	Definition of unionoid in English: unionoid adjective ˈjuːnɪənɔɪd Zoology Of or relating to the family Unionidae of freshwater mussels, or the order Unionoida in which they are included; unioniform. noun ˈjuːnɪənɔɪd Zoology A mollusc of the family Unionidae or order Unionoida; a freshwater mussel. Origin Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist. From scientific Latin Unio unio + -oid, with insertion of -n- after classical Latin ūniōn-, ūniō, etymon of the first element. Definition of unionoid in US English: unionoid adjectiveˈjuːnɪənɔɪd Zoology Of or relating to the family Unionidae of freshwater mussels, or the order Unionoida in which they are included; unioniform. nounˈjuːnɪənɔɪd Zoology A mollusc of the family Unionidae or order Unionoida; a freshwater mussel. Origin Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist. From scientific Latin Unio unio + -oid, with insertion of -n- after classical Latin ūniōn-, ūniō, etymon of the first element.
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