sunspot C1 Topic:Science & Research US /ˈsʌnˌspɑt/ UK /ˈsʌnspɒt/ See IPA manual Freq #64347 Meanings 1 noun a temporary dark region on the Sun's photosphere that is cooler than its surroundings and has intense magnetic activity Astronomers tracked the sunspot as it moved across the visible face of the Sun. Thesaurus Synonyms 1 noun · a temporary dark region on... solar spotphotospheric spot Word family Derived forms sunspotted Related forms solar flarephotospheresolar cyclemagnetism Etymology A compound of sun + spot. Sunspots look dark by contrast with the hotter photosphere around them, and their number rises and falls through the roughly eleven-year solar cycle. Topics Science & Research External links Cambridge Dictionary Wiktionary Google Images # sunspot **Type:** Word **Level:** C1 **Part of speech:** noun **IPA (US):** /ˈsʌnˌspɑt/ **IPA (UK):** /ˈsʌnspɒt/ **Frequency rank:** 64347 ## Meanings 1. a temporary dark region on the Sun's photosphere that is cooler than its surroundings and has intense magnetic activity ## Examples - Astronomers tracked the sunspot as it moved across the visible face of the Sun. ## Synonyms - solar spot - photospheric spot ## Derived Forms - sunspotted ## Related Forms - solar flare - photosphere - solar cycle - magnetism ## Etymology A compound of sun + spot. Sunspots look dark by contrast with the hotter photosphere around them, and their number rises and falls through the roughly eleven-year solar cycle. ## Topics - Science & Research markdown