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Trinucleus

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Tri·​nucleus | \ "+ \

Definition of Trinucleus

: a widely distributed genus (the type of the family Trinucleidae) of Ordovician trilobites in which the glabella and cheeks form three rounded elevations on the head

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History and Etymology for Trinucleus

New Latin, from tri- + nucleus

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Dictionary Entries Near Trinucleus

trinucleotide

Trinucleus

trio

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Cite this Entry

“Trinucleus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Trinucleus. Accessed 22 May. 2022.

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