semilattice

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English

Etymology

semi- +‎ lattice

Noun

semilattice (plural semilattices)

English Wikipedia has an article on:
Wikipedia
  1. (mathematics) A partially ordered set that either has a join (a least upper bound) for any nonempty finite subset (a join-semilattice or upper semilattice) or has a meet (or greatest lower bound) for any nonempty finite subset (a meet-semilattice or lower semilattice).
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