처방전 등에서 약의 복용 횟수나 빈도를 나타낼 때 쓰는 말로, '세 번' 또는 '3회'를 의미함.
Three times; specifically used in medical prescriptions to denote frequency.
예문:
"The doctor wrote 'ter' on the script to ensure the patient took the medicine thrice daily."
"The abbreviation 't.i.d.' stands for 'ter in die', which translates to three times a day."