Home › Words › B › blanketweedblanketweedblanketweed means a filamentous alga often found in ponds.EtymologyFrom blanket + weed.nouna filamentous alga often found in pondsDefinitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.beanweed 61% match — Scytosiphon lomentaria, a littoral brown filamentous seaweed. vs blanketweed →pondweed 58% match — Any of several plants that grow in ponds or similar aquatic conditions:; Potamogeton, a diverse and worldwide genus vs blanketweed →waterweed 57% match — Any of several aquatic herbs of the genus Elodea. vs blanketweed →bubbleweed 57% match — Any of the seaweeds of the genus Hormosira. vs blanketweed →conferva 56% match — Any of a number of unbranched slender green freshwater algae, formerly in the genus Conferva, now mostly in genera Cladophora or Tribonema vs blanketweed →epiphyton 54% match — periphyton growing on other plants vs blanketweed →elodea 54% match — Any of several underwater freshwater perennials, of the genus Elodea, that have grasslike leaves; ditchmoss or pondweed. vs blanketweed →caulonema 53% match — A filamentous, pigmented growth in a bryophyte vs blanketweed →