15-letter words containing h, e, m, l, y
- plethysmography — the tracking of changes measured in bodily volume
- polyphemus moth — a large, yellowish-brown American silkworm moth, Antheraea polyphemus, having a prominent eyespot on each hind wing and feeding on cherry, apple, and other trees.
- radiochemically — by radiochemical means or methods; from a radiochemical perspective
- rhyming couplet — a pair of lines in poetry that rhyme and usually have the same rhythm
- sodium ethylate — a white, hygroscopic powder, C 2 H 5 ONa, that is decomposed by water into sodium hydroxide and alcohol: used chiefly in organic synthesis.
- strephosymbolia — a condition of perceiving objects as their mirror image and, specifically, having difficulty in distinguishing letters in words
- sully-prudhomme — René François Armand [ruh-ney frahn-swa ar-mahn] /rəˈneɪ frɑ̃ˈswa arˈmɑ̃/ (Show IPA), 1839–1907, French poet: Nobel prize 1901.
- summer holidays — the time when children do not go to school in the summer
- sympathetically — characterized by, proceeding from, exhibiting, or feeling sympathy; sympathizing; compassionate: a sympathetic listener.
- tetramethyllead — a colorless liquid, (CH 3) 4 Pb, insoluble in water, slightly soluble in alcohol and benzene, used as an antiknock agent in gasoline.
- the holy family — the infant Jesus, Mary, and St Joseph
- the paralympics — a sporting event, modelled on the Olympic Games, held solely for disabled competitors