— nemathecial /nem'euh thee"sheuhl, -shee euhl, -see-/ , adj.
/nem'euh thee"shee euhm, -see euhm/ , n. , pl. nemathecia /-shee euh, -see euh/ .
a wartlike protuberance on the thallus of certain red algae, containing tetraspores, antheridia, or cystocarps.
[ 1820-30; nêma thread + thekíon THECIUM ]