also: ギリシアもじ
noun
Greek letter; Greek alphabet
Refers to individual letters or the alphabet as a whole. Both meanings are common and context-dependent.
数学ではよくギリシャ文字を使う。
Greek letters are often used in mathematics.
ギリシャ文字のアルファベットを覚えていますか。
Do you remember the Greek alphabet?
Compound of ギリシャ (Greece) and 文字 (letter, character).