一歳 (いっさい) Japanese meaning | KotomoraMeanings
1
noun
one-year-old
Used for a person or animal that is one year old. Often appears in phrases like 一歳の誕生日 (first birthday) or 一歳児 (one-year-old child).
genius, years old, cubic shaku
Similar words
- 一つ
一つ is the general counter for one thing, while 一歳 specifically counts age in years.
- 一歳児
一歳児 is a compound meaning 'one-year-old child', using 一歳 as a modifier.
Etymology
Compound of 一 (one) and 歳 (year of age). The reading いっさい results from the combination of いち and さい with gemination.