(music) perfect fifth (interval between the first and second overtones or of seven semitones)

color fastness

(physics) absolute zero (coldest possible temperature, -273.15° Celsius)

happening once a year

Alternative form of 愛でたい

going back to sleep (e.g. after waking up in the morning)

(geometry) sphericity

double dipping

digital terrestrial television

a pitch accent pattern in Japanese where the first mora is high, followed by an immediate downstep: the first syllable has high pitch and all subsequent syllables have low pitch