Chain-fern
any of several ferns of the genus Woodwardia, having a chainlike row of sori on either side of the midrib of each fertile leaflet.
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- Chain-gang
a group of convicts chained together, especially when working outside. noun (US) a group of convicted prisoners chained together, usually while doing hard labour noun phrase The football officials who carry and set the chain that marks off the ten yards needed for a first down (1980s+)
- Chain-gear
a gear assembly in which motion is transmitted by means of a chain.
- Chain grate
noun a type of mechanical stoker for a furnace, in which the grate consists of an endless chain that draws the solid fuel into the furnace as it rotates
- Start-codon
a codon that starts the synthesis of a protein molecule.
- Chain-letter
a letter sent to a number of people, each of whom is asked to make and mail copies to other people who are to do likewise, often used as a means of spreading a message or raising money. noun a letter, often with a request for and promise of money, that is sent to many […]