Any of several devices used to estimate the proportion of butterfat in milk

butan-1-ol or n-butanol or butyl alcohol - CH₃(CH₂)₃-OH / butan-2-ol or sec-butanol - CH₃CH₂CH(CH₃)-OH / 2-methyl-propan-1-ol or iso-butanol - (CH₃)₂CHCH₂-OH

plural of tahseel

(rare) Transcending all the basic four elements: earth, wind or air, fire, and water; that exists on a transcendent plane; being nonmaterial.