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biological

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biological clock is ticking

Of a woman, there is a limited amount of time in which to be able to conceive a child. I've been very successful in my career and want to see it to its fullest, but I would also love to have kids, and I know my biological clock is ticking. For women who may want to have children, their biological clocks are always ticking—a concern that men never have to worry about.

See also: biological, clock, ticking

clock is ticking, the

The time (for something to be done) is passing quickly; hurry up. For example, The clock is ticking on that project. This allusion to a stopwatch is often used as an admonition to speed something up. It also is used in more specific form- one's biological clock is ticking-meaning that a woman may soon be too old to bear a child, as in Her biological clock is ticking-she just turned forty.

See also: clock