This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. (of a subset) the greatest element of the containing set that is smaller than or equal to all elements of the subset. The infimum may or may not be a member of the subset.

"(The degree of an universally quantified formula ˆ xφ is defined as the infimum of truth degrees of instances of φ; similarly"

supremum   

indium    infirm   

greatest lower bound