gelidium

noun ge·lid·i·um \ jəˈlidēəm \

Definition of gelidium

1 capitalized :a genus of red algae (family Gelidiaceae) having cartilaginous terete or compressed much-branched fronds and cystocarps immersed in swollen branchlets and being important sources of agar — see gelidiales
2 plural -s :any alga of the genus Gelidium

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Origin and Etymology of gelidium

New Latin, from Latin gelidus (influenced in meaning by Latin gelare to freeze, congeal) + New Latin -ium; from the fact that the plants are boiled down to make a jelly


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