사인

Korean

Etymology 1

From English sign, perhaps by way of Japanese サイン (sain, “signature”).

Pronunciation
Romanizations
Revised Romanization?sain
Revised Romanization (translit.)?sain
McCune–Reischauer?ssain
Yale Romanization?qsain

Noun

사인 • (sain)

  1. signature
    Synonym: 서명(署名) (seomyeong)
    계약서에 사인을 했다.
    gyeyakseo-e sain-eul haetda.
    [I] signed the contract.
  2. autograph
    어제 유명 배우의 사인을 받았다.
    eoje yumyeong bae'u-ui sain-eul badatda.
    I got an autograph of a famous actor yesterday.
  3. signal
    감독이 선수에게 손으로 사인을 보냈다.
    gamdog-i seonsu-ege son-euro sain-eul bonaetda.
    The coach sent hand signals to the player.
Derived terms

Etymology 2

From English sine.

Pronunciation
Romanizations
Revised Romanization?sain
Revised Romanization (translit.)?sain
McCune–Reischauer?ssain
Yale Romanization?qsain

Noun

사인 • (sain)

  1. (trigonometry, mathematics) sine
See also
  • 코사인 (kosain, “cosine”)
  • 탄젠트 (tanjenteu, “tangent”)

Etymology 3

Sino-Korean word from 死因, from 死 (“death”) + 因 (“cause”).

Pronunciation
  • (SK Standard/Seoul) IPA(key): [ˈsʰa̠(ː)in]
  • Phonetic hangul: [사(ː)인]
    • Though still prescribed in Standard Korean, most speakers in both Koreas no longer distinguish vowel length.
Romanizations
Revised Romanization?sain
Revised Romanization (translit.)?sain
McCune–Reischauer?sain
Yale Romanization?sāin

Noun

사인 • (sain) (hanja 死因)

  1. cause of death
    사인을 밝히다
    sain-eul balkida
    to determine the cause of death

Etymology 4

Sino-Korean word from 私人, from 私 (“private”) + 人 (“person”).

Pronunciation
Romanizations
Revised Romanization?sain
Revised Romanization (translit.)?sain
McCune–Reischauer?sain
Yale Romanization?sain

Noun

사인 • (sain) (hanja 私人)

  1. private individual
    Antonym: 공인(公人) (gong'in)
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