buku ajar

== Indonesian == === Etymology === Compound of buku +‎ ajar, probably calque from Chinese 課本／课本 (“textbook”, literally “lesson book”). === Pronunciation === IPA(key): [ˈbuku ˈad͡ʒar] === Noun === buku ajar (plural buku-buku ajar) textbook Synonyms: buku paket, buku pelajaran, buku teks