Etymology
Advertisement

sunspot (n.)

also sun-spot, 1849, in astronomy, from sun (n.) + spot (n.). Earlier "a spot on the skin caused by exposure to the sun" (1818).

updated on December 28, 2013

Advertisement
Advertisement
Definitions of sunspot from WordNet

sunspot (n.)
a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field;
Synonyms: macula
From wordnet.princeton.edu, not affiliated with etymonline.