The smallestset that possesses a particular property (such as convexity) and contains every point of A; slightly more formally, the intersection of all sets which possess the specified property and of which A is a subset.
From Middle English hul, hulle, holle, from Old English hulu, from Proto-Germanic *hul- (compare Dutch hul,
German Hülle, Hülse), perhaps from Proto-Indo-European *ḱel-; or possibly from Proto-Indo-European *kal- (compare Old Irish calad, calath, Latin callus, callum, Old Church Slavonic калити). For the sense development, compare French coque, Ancient Greek φάσηλος.
From Middle English holle, hoole, of uncertain origin. Possibly a variant and special use of Etymology 1 above, conformed to hull. Alternatively, a variant of Middle English hole, hoole, holle, related to Middle Dutch and Dutch hol. More at hole.
Modern English dictionary
Explore and search massive catalog of over 900,000 word meanings.
Word of the Day
Get a curated memorable word every day.
Challenge yourself
Level up your vocabulary by setting personal goals.