9-letter words containing o, y, s
- isopycnal — Also, isopycnal [ahy-suh-pik-nl] /ˌaɪ səˈpɪk nl/ (Show IPA). having the same density.
- isopycnic — Also, isopycnal [ahy-suh-pik-nl] /ˌaɪ səˈpɪk nl/ (Show IPA). having the same density.
- isorhythm — a structural feature characteristic of the Ars Nova motet, consisting of a single rhythmic phrase pattern repeated, usually in the tenor, throughout the composition.
- jealously — feeling resentment against someone because of that person's rivalry, success, or advantages (often followed by of): He was jealous of his rich brother.
- jockeyish — resembling a jockey
- jockeyism — the skills and practices of jockeys
- joshingly — In a joshing manner; teasingly.
- joy-stick — Informal. the control stick of an airplane, tank, or other vehicle.
- joylessly — In a joyless manner.
- joyriders — Plural form of joyrider.
- joysticks — Plural form of joystick.
- karyosome — Also called chromocenter. any of several masses of chromatin in the reticulum of a cell nucleus.
- ketolysis — the breaking down of ketones.
- keyboards — Plural form of keyboard.
- keynoters — Plural form of keynoter.
- keystoner — a native or inhabitant of Pennsylvania (used as a nickname).
- keystones — Plural form of keystone.
- keystroke — one stroke of any key on a machine operated by a keyboard, as a typewriter, computer terminal, or Linotype: I can do 3000 keystrokes an hour.
- kilobytes — Plural form of kilobyte.
- klystrons — Plural form of klystron.
- korzybski — Alfred (Habdank Skarbek) [hab-dangk skahr-bek;; Polish hahp-dahngk skahr-bek] /ˈhæb dæŋk ˈskɑr bɛk;; Polish ˈhɑp dɑŋk ˈskɑr bɛk/ (Show IPA), 1879–1950, U.S. writer on general semantics, born in Poland.
- koshigaya — a city in central Honshu, Japan, a Tokyo suburb.
- kuniyoshi — Yasuo [yah-soo-aw] /yɑˈsu ɔ/ (Show IPA), 1893–1953, U.S. painter, born in Japan.
- kyongsong — Seoul
- labor spy — an employee who is used by management to spy on union activities.
- ladyloves — Plural form of ladylove.
- layabouts — Plural form of layabout.
- layperson — a person who is not a member of the clergy; one of the laity.
- lazybones — a lazy person.
- leprosery — a hospital for leprosy sufferers
- leprosity — the state of being leprous
- leprously — In a leprous way.
- lily pons — Lily [lil-ee;; French lee-lee] /ˈlɪl i;; French liˈli/ (Show IPA), 1904–76, U.S. operatic soprano, born in France.
- lipolysis — the hydrolysis of fats into fatty acids and glycerol, as by lipase.
- lissomely — In a lissome manner; with supple grace.
- lithocyst — a sac, containing otoliths, found in many invertebrates, supposedly connected to hearing and orientation
- lobbyists — Plural form of lobbyist.
- logotypes — Plural form of logotype.
- lounsbury — Thomas Raynesford [reynz-ferd] /ˈreɪnz fərd/ (Show IPA), 1838–1915, U.S. linguist and educator.
- loutishly — In a loutish manner.
- loyalists — Plural form of loyalist.
- loyalness — faithful to one's sovereign, government, or state: a loyal subject.
- loyalties — Plural form of loyalty.
- lycopolis — the Ancient Greek name for Asyut
- lycopsids — Plural form of lycopsid.
- lymphomas — Plural form of lymphoma.
- lyomerous — of or relating to Lyomeri fish
- lyonnaise — (of food, especially fried potatoes) cooked with pieces of onion.
- lyonnesse — the mythical region where Sir Tristram was born, located near Cornwall in SW England and supposed to have been submerged by the sea.
- lysocline — the depth of the ocean at which the solubility of calcium carbonate increases substantially.