The Collaborative International Dictionary
Laminarian
Laminarian \Lam`i*na"ri*an\, a. Pertaining to seaweeds of the genus Laminaria, or to that zone of the sea (from two to ten fathoms in depth) where the seaweeds of this genus grow.
Wiktionary
laminarian
a. Relating to seaweeds of the genus ''Laminaria'', or to the depth zone of the sea in which they grow. n. Any seaweed of the genus ''Laminaria''.