(statistics) likelihood

what happens twice will happen three times, if it happens twice it will happen again

(uranography) Winter Triangle - a bright asterism of the northern winter sky. Its corners are the stars Betelgeuse, Procyon, and Sirius.

(uranography) Summer Triangle - a bright asterism of the northern summer sky. Its corners are the stars Altair, Deneb, and Vega.

happening once a year

Alternative form of 愛でたい

high definition (enhanced picture quality)

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

double dipping

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