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heliacal
helianthemum
helianthus
helibiking
heliborne
helic-
helical
helical gear
helicase
helices
helichrysum
helico-
Helicobacter pylori
helicograph
helicoid
helicon
helicopter
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helicase
he·li·case [ hélli kàyss, hélli kàyz ]


noun 
Definition:
 
enzyme that separates DNA helix strands: an enzyme that breaks the bonds between base pairs in DNA, leaving two rows of bases with free-ends, on which new complementary strands can form
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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