18-letter words containing e, t, h, i, n, y
- thirty-second rest — a rest equal in value to a thirty-second note.
- three-day eventing — participation in a three day equestrian competition consisting of dressage, cross-country jumping, and stadium jumping
- triarylmethane dye — any of the class of dyes containing three aryl groups attached to a central carbon atom: used chiefly for dyeing cotton, wool, and silk.
- unenthusiastically — full of or characterized by enthusiasm; ardent: He seems very enthusiastic about his role in the play.
- university heights — a city in NE Ohio, near Cleveland.
- vitamin a aldehyde — retinal2 .
- water of hydration — the portion of a hydrate that is represented as, or can be expelled as, water: now usually regarded as being in true molecular combination with the other atoms of the compound, and not existing in the compound as water.
- wesleyan methodist — a member of any of the churches founded on the evangelical principles of John Wesley.
- white iron pyrites — marcasite
- wireless telephony — Now Rare. radiotelephony.
- working hypothesis — See under hypothesis (def 1).