Meaning & use
Tropic
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Either of the two lines of latitude, the Tropic of Cancer and the Tropic of Capricorn, that mark the boundaries of the tropical zone.
See it in a sentence
The ship crossed the tropic just before dawn.
Crops here thrive in the warm climate near the tropic.
A note on using this word
As an adjective element in physiology, '-tropic' describes a hormone that stimulates another gland, as in 'adrenocorticotropic'.
Another way to use it
2. adjective
Physiology: stimulating or influencing the activity of a particular gland or organ.
Gonadotropic hormones regulate the activity of the reproductive glands.
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