ten; 10
The cardinal number ten. Used in counting, mathematics, and everyday contexts. The reading じゅう is standard; とお is used in native Japanese counting (ひとつ, ふたつ, …, とお).
I bought ten apples.
The meeting starts at ten o'clock.
ten years old
Only with reading とお
Used specifically for age, read とお. Common in the phrase 十歳 (とお).
He will be ten years old this year.
poetry anthology (archaic)
Only when written 什
Archaic meaning, restricted to the kanji 什. Refers to a book containing a collection of poems. Not used in modern Japanese.
The character 什 was used to refer to old poetry collections.
There are ten students in the classroom.
The train leaves in ten more minutes.
I bought ten pencils.
Formal kanji used in legal and financial documents to prevent forgery.
Arabic numeral spelling, common in horizontal writing and lists.
Archaic kanji for a poetry collection; not used in modern Japanese.
Vertical writing variant using 〇 for zero; mainly seen in traditional contexts.