ＯＰＡＣalso: オパックFreq.FrequencyTop 100,000Meanings1nounOPAC; online public access catalogLibrary science term for a digital catalog system used to search library collections.図と書しょ館かんのＯＰＡＣで本ほんを検けん索さくした。I searched for a book using the library's OPAC.
