naviculoid
/nəˈvɪkjʊlɔɪd/Biology
adjective
1Of, relating to, or resembling a diatom of the genus Navicula, which has bilaterally symmetrical boat-shaped or spindle-shaped cells.
2More generally: = navicular.
Origin
Late 19th century. In sense 1 from scientific Latin Navicula, genus name + -oid.