10-letter words that end in um
- praetorium — (in Roman history) the headquarters or residence of a Roman official, governor or military commander
- presternum — Anatomy. manubrium.
- primordium — the first recognizable, histologically differentiated stage in the development of an organ.
- principium — a principle.
- procambium — the meristem from which vascular bundles are developed.
- proctodeum — a depression in the ectoderm of the anal region of a young embryo, which develops into part of the anal canal.
- promethium — a rare-earth, metallic, trivalent element. Symbol: Pm; atomic number: 61.
- propylaeum — Often, propylaea. a vestibule or entrance to a temple area or other enclosure, especially when elaborate or of architectural importance.
- proscenium — Also called proscenium arch. the arch that separates a stage from the auditorium. Abbreviation: pros.
- prosternum — the ventral sclerite of the prothorax of an insect.
- prostomium — the unsegmented, preoral portion of the head of certain lower invertebrates.
- psalterium — the omasum.
- pseudoalum — any of a class of alums in which the usual monovalent metal of a true alum is replaced by a bivalent metal
- puerperium — the four-week period following childbirth.
- quadrivium — (during the Middle Ages) the more advanced division of the seven liberal arts, comprising arithmetic, geometry, astronomy, and music.
- quarkonium — a meson composed of a quark and an antiquark of the same flavor.
- referendum — the principle or practice of referring measures proposed or passed by a legislative body, head of state, etc., to the vote of the electorate for approval or rejection. Compare initiative (def 4a).
- roche alum — an alumlike substance derived from alunite.
- sanatorium — a hospital for the treatment of chronic diseases, as tuberculosis or various nervous or mental disorders.
- sanitarium — an institution for the preservation or recovery of health, especially for convalescence; health resort.
- sanitorium — a facility for housing patients with long-term illnesses
- sclerotium — a vegetative, resting food-storage body in certain higher fungi, composed of a compact mass of hardened mycelia.
- seaborgium — a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Sg; atomic number: 106.
- seaquarium — an area of salt water where sea animals are kept so people can look at them
- septennium — a period or cycle of seven years
- sequestrum — a fragment of bone that has become necrotic as a result of disease or injury and has separated from the normal bone structure.
- sestertium — a money of account of ancient Rome, equal to 1000 sesterces.
- simillimum — (in homeopathy) the remedy most likely to restore to health
- simulacrum — a slight, unreal, or superficial likeness or semblance.
- snare drum — a small double-headed drum, carried at the side or placed on a stationary stand, having snares across the lower head to produce a rattling or reverberating effect.
- sparganium — a marsh plant
- spermarium — the sperm gland
- spermatium — Botany. the nonmotile male gamete of a red alga.
- spirit gum — a glue used in fastening false hair, as a beard or mustache, to an actor's skin.
- sporangium — the case or sac in which spores are produced.
- steel drum — Music. a bowl-shaped percussion instrument common in the West Indies, made from a steel barrel divided into sections producing different notes when struck.
- stichidium — a podlike branch containing tetraspores, found in some rose algae
- stomodaeum — stomodeum.
- stramonium — jimson weed.
- stumblebum — a clumsy, second-rate prizefighter.
- subminimum — being below a minimum standard, rate, quota, etc.: a subminimum wage for teenagers.
- subsellium — misericord (def 2).
- substratum — something that is spread or laid under something else; a stratum or layer lying under another.
- sudatorium — a hot-air bath for inducing sweating.
- sugar-plum — a small sweetmeat made of sugar with various flavoring and coloring ingredients; a bonbon.
- sulphonium — the hypothetical univalent radical -SH3
- surrogatum — a substitute
- synandrium — a peculiar fusion of stamens
- synaxarium — synaxarion.
- tannenbaum — a Christmas tree.