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topmast
topminnow
topmost
topnotch
topo
topo-
topography
topoi
topoisomerase
topoisomerase inhibitor
topology
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topoisomerase
top·o·i·som·er·ase [ tòppō ī sómmə ràyss, tòppō ī sómmə ràyz ] (plural top·o·i·som·er·as·es)


noun 
Definition:
 
enzyme that unwinds DNA helix: an enzyme that controls the manipulation of the structure of DNA necessary for replication
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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