hammerhead

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“
The viroids that Sanjuán and his colleagues studied contain a stretch of RNA called a hammerhead enzyme that speeds up the viroid's duplication in an enzymelike way.

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Definitions (11)

Toggle American Heritage definitions American Heritage Dictionary (4)

  1. noun The head of a hammer.
  2. noun Any of several predatory sharks of the genus Sphyrna, having the sides of the head elongated into fleshy extensions with the eyes at the ends.
  3. noun A wading bird (Scopus umbretta) of Africa and southwest Asia, having brown plumage, a large bladelike bill, and a long backward-pointing crest. Also called hammerkop, umbrette.
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Examples (40)

  • Except certain criminal organizations have been kidnapping people and turning them into a kind of hammerhead shark, brainwashing the victims into joining their ranks and so creating an army of killers. —  F ;SF - vol 089 issue 02 - August 1995
  • When he develops an anti-hammerhead virus and looses it on the world, it brings his company to rain, kills off or returns many of the hammerheads to their former human forms, and makes the surviving leaders all the more determined to put an end to all land-life. —  F ;SF - vol 089 issue 02 - August 1995
  • A sneaky sawfish was cutting in on the time of the damselfish of a hammerhead, and the hammerhead was getting suspicious. —  Centaur Aisle
  • She felt her heart turn over, even though it was still pounding in her chest like a hammerhead. —  PurchasedforRevenge
  • Balicasag and Pamilacan islands are two of the very best and most popular dives in the Visayas with the black coral forest among its main attractions while the town of Cabilao is renowned for the hammerhead sharks that shoal around the clear waters. —  Home
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/ˈhæmərhɛd/
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