영어 알파벳의 스물한 번째 글자이자 다섯 번째 모음.
The twenty-first letter of the English alphabet and its fifth vowel.
예문:
"The word 'queue' contains two u's."
"U is the last vowel in the English alphabet."
알파벳 U와 비슷한 형태나 모양.
Something having the shape of the letter U.
예문:
"The magnet was forged into a sharp U shape."
"The river makes a wide U-turn through the valley."
학업 성적에서 '미흡' 또는 '불합격'을 나타내는 등급.
A grade representing 'unsatisfactory' performance in some educational systems.
예문:
"He was disappointed to see a U on his final report card."
"A grade of U means the student must retake the course."
탄소-12 원자 질량의 12분의 1로 정의된 질량 단위.
A unit of mass used to express atomic and molecular weights, defined as one-twelfth of the mass of a carbon-12 atom.
예문:
"The mass of a hydrogen atom is approximately 1.008 u."
"Scientists use 'u' to denote the unified atomic mass unit."
그리스 문자 뮤(µ) 대신 사용하는 마이크로(10의 -6승) 기호.
A symbol used for the prefix 'micro-' (10^-6) when the Greek letter mu is unavailable.
예문:
"The dosage was listed as 50 ug in the plain text file."
"In many digital systems, 'u' is a standard substitute for the micro symbol."