If you describe something as encyclopedic, you mean that it is very full, complete, and thorough in the amount of knowledge or information that it has.
例句
He had an encyclopaedic knowledge of drugs.他在藥品方面學識廣博。...an almost overwhelmingly encyclopaedic volume.幾乎包羅萬象的卷冊
英漢詞典釋義
adj.
百科全書般的;學識淵博的
In this sense, the encyclopedic cultural value and historic significance of Dunhuang are inestimable.從這個意義上來說，敦煌百科全書般的文化價值和歷史重量是無法估計的。
百科全書的
He had an encyclopedic command of the field of knowledge, and by a word or a phase, by delicate rapier thrust, he punctured them.他所掌握的知識就像百科全書那樣豐富。用一個字或一句話，用幾句靈敏機智的對答，他就洞穿了對方的要害。