tropic
6 letters · noun · scores 1,400 in SpellHuntr
noun
either of two parallels of latitude about 23.5 degrees to the north and south of the equator representing the points farthest north and south at which the sun can shine directly overhead and constituting the boundaries of the Torrid Zone or tropics
adjective
relating to or situated in or characteristic of the tropics (the region on either side of the equator)
Tropic in a sentence
The binding of oxygen to hemoglobin is allosterically regulated by various tropic factors, such as BPG and acidity.
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