Khí-lia̍t (Hàn-jī:齒列, Eng-gí:dentition) sī chhùi-khí tī chhùi-lāi ê hoat-io̍k kap pâi-lia̍t. Mammal ê chhùi-khí siāng-chē ū 4 chióng lūi-pia̍t, mn̂g-khí, kak-khí, sió-kiū-khí, kap tōa-kiū-khí. Nā-sī kan-taⁿ 1 chióng tio̍h kiò-chò homodont, ū 2 chióng í-siōng tio̍h kiò-chò heterodont. Chiok-chē chióng-lūi ê mammal ū 2 thò khí-lia̍t (diphyodontism), tāi-seng sī ni-khí khí-lia̍t (deciduous dentition, primary dentition), jiân-āu oāⁿ-chò éng-kiú khí-lia̍t (permanent dentition, secondary dentition).