11-letter words containing r, e, p, i, o
- rhizosphere — the area of soil that surrounds the roots of a plant and is altered by the plant's root growth, nutrients, respiration, etc.
- riot police — police armed against public disorder
- robespierre — Maximilien François Marie Isidore de [mak-see-mee-lyan frahn-swa ma-ree ee-zee-dawr duh] /mak si miˈlyɛ̃ frɑ̃ˈswa maˈri i ziˈdɔr də/ (Show IPA), 1758–94, French lawyer and revolutionary leader.
- rock pigeon — rock dove.
- rocket ship — a rocket-propelled aircraft or spacecraft.
- rompishness — the state or condition of being rompish
- rope stitch — (in embroidery) a stitch formed from the entwining of stitches.
- ropedancing — the act of dancing on a rope
- safe period — an interval of the menstrual cycle when fertilization is considered to be least likely, usually a number of days prior and subsequent to the onset of menstruation.
- saprolegnia — a variety of fungus
- sapropelite — a foul-smelling mud
- scapigerous — having a scape or leafless stalk
- scorpaenoid — resembling or related to the family Scorpaenidae.
- scripholder — a person who owns a scrip or scrips
- scripophile — a person who practices scripophily.
- seismograph — any of various instruments for measuring and recording the vibrations of earthquakes.
- self-profit — Often, profits. pecuniary gain resulting from the employment of capital in any transaction. Compare gross profit, net profit. the ratio of such pecuniary gain to the amount of capital invested. returns, proceeds, or revenue, as from property or investments.
- semipopular — relatively popular; quite popular
- senatorship — the office or position of a senator
- senior prom — a formal dance or gathering of high school students held at the end of the senior year
- septentrion — Obsolete. the north.
- septiferous — in possession of a septum or partition
- serial port — A serial port on a computer is a place where you can connect the computer to a device such as a modem or a mouse.
- serpiginous — (formerly) a creeping or spreading skin disease, as ringworm.
- ship-broker — a person who acts for a shipowner by getting cargo and passengers for his ships and also handling insurance and other matters
- sideropenia — a lack of iron in the body
- siderophile — (of a cell or tissue) having an affinity for iron.
- sideroscope — an apparatus for detecting splinters of iron or steel in the eye.
- silverpoint — a technique of drawing with a silver stylus on specially prepared paper.
- simon peter — Peter (def 1).
- singaporean — an island on the Strait of Singapore, off the S tip of the Malay Peninsula.
- six-pointer — a football match between two teams in similar positions in the league table, considered as being worth six points as it not only gains the winning team three points but denies three points to the losing team
- slipperwort — any of several tropical American plants belonging to the genus Calceolaria, of the figwort family, having opposite or whorled leaves and slipper-shaped flowers.
- sniperscope — a snooperscope designed for attaching to a rifle or carbine.
- soap boiler — a manufacturer of soap
- soldiership — a person who serves in an army; a person engaged in military service.
- sophistries — Sophistries are clever arguments that sound convincing but are in fact false.
- spermatoxic — (of a substance) toxic to spermatozoa.
- spermatoxin — a substance toxic to spermatozoa.
- spermophile — any of various burrowing rodents of the squirrel family, especially of the genus Spermophilus (or Citellus), sometimes sufficiently numerous to do much damage to crops, as the ground squirrels and susliks.
- spermotoxic — (of a substance) toxic to spermatozoa.
- spermotoxin — a substance toxic to spermatozoa.
- spheroidize — to turn or be turned into spheroids
- spice route — an ancient trade route followed by merchants, importers and exporters trading in exotic spices such as cloves and cinnamon
- spider hole — a foxhole with a camouflaged lid or cover in which a sniper hides
- spin bowler — a bowler who specializes in bowling balls with a spinning motion
- spiniferous — (esp of plants) bearing spines or thorns
- spinsterdom — the state of being a spinster
- spiriferous — having a spire or spiral parts.
- spirochaete — any of various spiral-shaped motile bacteria of the family Spirochaetaceae, certain species, as Treponema, Leptospira, and Borrelia, being pathogenic to humans and other animals, and other species being free-living, saprophytic, or parasitic.