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ABCDEFGHIJKLMNOPQRSTUVWXYZ
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Y (1)
Y (2)
Y (3)
y (1)
y (2)
y (3)
y’all
y-axis
Y chromosome
Y-fronts
Y-level
Y2K
Y2K-compliant
YA
ya-boo
yaar
yabber
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Y chromosome
Y chromosome (plural Y chromosomes)


noun 
Definition:
 
male sex chromosome: the sex chromosome that determines the male sex in humans and other mammals. The body cells of males each possess one Y chromosome paired with one X chromosome.
See also  X chromosome
Encarta® World English Dictionary [World English Edition] © & (P)2008 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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