四半期|しはんきshihanki[2]nakadaka (mid-high)

1. nounquarter (of a year)
   計算書けいさんしょは四半期しはんきごとに郵送ゆうそうされます。↗

   Statements will be mailed every quarter.

• SynonymクォーターNeutralLoanword for one quarter (1/4), a quarter of a year, or a person with one non-Japanese grandparent; 「四半期」 covers only the three-month period.
• Related４半期Neutral「四半期」 written with Arabic numerals; seen mostly in tables in financial reports.
• Antonym通期つうきWrittenWritten/formal term for the whole fiscal year, the opposite of the three-month 「四半期」, as in 「通期決算」.

Use 「四半期」 for the three-month quarters of a year, as in 「第1四半期」 and 「四半期決算」; the loanword equivalent is 「クォーター」, and the opposite is 「通期」 for the full year.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 1年ねんを3か月げつごとに4分割ぶんかつした中なかの一ひとつ。1月がつから3月がつを第だい1四半期しはんき、4月がつから6月がつを第だい2四半期しはんき、7月がつから9月がつを第だい3四半期しはんき、10月がつから12月がつを第だい4四半期しはんきと呼よぶ。