18-letter words containing h, o, m, l, s
- the bottomless pit — the underworld; hell
- the lords temporal — (in Britain) peers other than bishops in their capacity as members of the House of Lords
- the magnolia state — a nickname referring to Mississippi
- the palmetto state — a nickname for South Carolina
- the same old story — the familiar or regular course of events
- thermoluminescence — phosphorescence produced by the heating of a substance.
- thomas alva edison — Thomas Alva [al-vuh] /ˈæl və/ (Show IPA), 1847–1931, U.S. inventor, especially of electrical devices.
- to raise the alarm — If you raise the alarm or sound the alarm, you warn people of danger.
- vermilion rockfish — a scarlet-red rockfish, Sebastes miniatus, inhabiting waters along the Pacific coast of North America, important as a food fish.
- wesleyan methodist — a member of any of the churches founded on the evangelical principles of John Wesley.
- withdrawal symptom — effects of stopping a drug
- world championship — an international competition in a particular sport or activity for people all around the world
- zermelo set theory — (mathematics) A set theory with the following set of axioms: Extensionality: two sets are equal if and only if they have the same elements. Union: If U is a set, so is the union of all its elements. Pair-set: If a and b are sets, so is {a, b}. Foundation: Every set contains a set disjoint from itself. Comprehension (or Restriction): If P is a formula with one free variable and X a set then {x: x is in X and P(x)}. is a set. Infinity: There exists an infinite set. Power-set: If X is a set, so is its power set. Zermelo set theory avoids Russell's paradox by excluding sets of elements with arbitrary properties - the Comprehension axiom only allows a property to be used to select elements of an existing set.