noun which may take the genitive case particle 'no', noun
immeasurable; infinite; inestimable
Formal or bookish noun/no-adjective meaning that something cannot be measured or counted. Often appears in elevated phrases, compounds, and religious or literary-sounding expressions such as 無量の慈悲 and 感慨無量.
That teaching speaks of immeasurable compassion.
Meeting my old teacher again at the graduation ceremony, I was overwhelmed with emotion.
I am grateful for the Buddha's immeasurable compassion.
莫大 describes something enormous or vast, especially concrete amounts like money or damage, whereas 無量 suggests something abstract that defies measurement altogether.
無料 is a homophone of 無量 meaning 'free of charge'; they are unrelated in meaning and written with different kanji (料 vs 量).
Standard kanji spelling; the kana reading is むりょう. Do not confuse this with 無料, also read むりょう, meaning 'free of charge'.
Sino-Japanese compound of 無, 'without,' and 量, 'measure' or 'quantity'; the spelling directly expresses the idea of being beyond measure.