第だい一いち四し半はん期き

noun

first quarter (of the year)

Business term for January–March (Q1) in financial or fiscal contexts.

• 当とう社しゃの第だい一いち四し半はん期きの売うり上あげは前ぜん年ねん比ひで増ぞう加かした。

  Our company's first-quarter sales increased year-on-year.