無限 (Bû-hān) (infinity) 是 (sī)表示 (piáu-sī)無 (bô)盡磅 (chīn-pōng)的 (ê)概念 (khài-liām),神學 (sîn-ha̍k),哲學 (tiat-ha̍k),數學 (sò͘-ha̍k)甘 (ham)生活呢 (seng-oa̍h--nih)攏 (lóng)有 (ū)咧 (leh)ēnĝ,毋過 (m̄-koh)逐 (ta̍k)个 (ê)領域 (léng-he̍k)的定義 (tēng-gī)無撨 (chiâu)siâng。無限嘛 (mā)號 (hō)做 (chò)無窮 (bû-kiông)。
佇 (Tī)數學,無限 (∞) 是真 (chin)濟 (chē)研究 (gián-kiù)咧探討 (thàm-thó)的問題 (būn-tê),比論 (pí-lūn)講 (kóng)極限 (ke̍k-hān) (limit),aleph數 (sò͘) (aleph number),集合論 (chi̍p-ha̍p-lūn)的class? (集合論),Dedekind無限集合 (chi̍p-ha̍p) (Dedekind-infinite set),? (large cardinal),Russel悖論 (poē-lūn) (Russell's paradox),超實數 (chhiau-si̍t-sò͘) (hyperreal number),投影 (tâu-iáⁿ)幾何學 (kí-hô-ha̍k) (projective geometry),? 實數 (si̍t-sò͘) (extended real number),甘絕對 (choa̍t-tùi)無限 (absolute Infinite),等等 (téng-téng)。