(grammar) a verbal conjugation class consisting of five alternating bases: -a, -i, -u, -e, and -o

The Japanese festival for children; a traditional rite of passage and festival day in Japan for three- and seven-year-old girls and three- and five-year-old boys, held annually on November 15. As Shichigosan is not a national holiday, it is generally observed on the nearest weekend. Similar to こどもの日 (Kodomo no Hi, literally “Children's Day”)

a male given name

Japanese night heron

(electronics) pentode (vacuum tube)

a pentadecagon

twenty-five; 25

thirty-five; 35

fifty-six; 56

(archaic) fifty-six; 56