nostoc

nos·toc

noun \ˈnäs-ˌtäk\

Definition of NOSTOC

: any of a genus (Nostoc) of usually filamentous cyanobacteria that fix nitrogen

Origin of NOSTOC

New Latin

First Known Use: 1650

Rhymes with NOSTOC

acock, ad hoc, air lock, alt-rock, amok, armlock, art-rock, backblock, ball cock, Balzac, bangkok, Bangkok, baroque, Bartók, bawcock, bedrock, bemock, bitstock, blackcock, blesbok, bloodstock, breechblock, burdock, buttstock, caprock, coldcock, crew sock, deadlock, defrock, dreadlock, dry dock, Dvořák, earlock, elflock, en bloc, epoch, fatstock, feedstock, fetlock, firelock, flintlock, forelock, foreshock, gamecock, gemsbok, gridlock, half cock, hard rock, havelock, haycock, headlock, headstock, heart block, hemlock, in stock, Iraq, jazz-rock, Kanak, Kazak, Kazakh, kapok, kneesock, Ladakh, Laubach, livestock, lovelock, matchlock, Mohock, Moloch, o'clock, oarlock, padlock, peacock, penstock, petcock, pibroch, picklock, post hoc, punk rock, rhebok, rimrock, roadblock, rootstock, Rostock, rowlock, scalp lock, Schirach, seed stock, shamrock, Sheetrock, shell shock, sherlock, Ship Rock, shock jock, shot clock, shylock, Sirach, slickrock, Slovak, smock frock, snatch block, soft rock, springbok, steenbok, stopcock, sunblock, swage block, ticktock, time clock, time lock, traprock, unblock, uncock, undock, van Gogh, wall rock, warlock, wedlock, wheel lock, whipstock, woodblock, woodcock, wristlock, zwieback

nostoc

noun    (Concise Encyclopedia)

Any of the cyanobacteria that make up the genus Nostoc. The cells are arranged in beadlike chains grouped together in a gelatinous mass. Ranging from microscopic to walnut-sized, nostoc masses may be found on soil and floating in still water. A special thick-walled cell has the ability to withstand drying for long periods of time. After 70 years of dry storage, cells of one species can germinate into filaments when moistened. Like most other cyanobacteria, nostocs contain two pigments and are capable of nitrogen fixation.