The story
From taxonomic name Hydractinia + -an.
Etymology from Wiktionary, CC BY-SA 4.0.
hydractinian
Today it means: A marine hydroid of the genus Hydractinia or a closely-related genus Full definition →
Today it means: A marine hydroid of the genus Hydractinia or a closely-related genus Full definition →
From taxonomic name Hydractinia + -an.
Etymology from Wiktionary, CC BY-SA 4.0.