12-letter words that end in one
- on the phone — having a telephone conversation
- parathormone — a hormone secreted by the parathyroids, important in the control of the calcium-phosphorus balance of the body
- partial tone — one of the pure tones forming a part of a complex tone.
- paving stone — slab used to lay a path
- phytohormone — hormone (def 3).
- phytonadione — vitamin K1.
- picturephone — a type of telephone where users can see each other as they talk, through the transmission of video images
- prednisolone — a synthetic glucocorticoid, C 2 1 H 2 8 O 5 , used in various forms to treat inflammation and allergies and in the treatment of acute leukemia, Hodgkin's disease, and lymphomas.
- pregnenolone — a steroid precursor to steroid hormones
- progesterone — Biochemistry. a hormone, C 2 1 H 3 0 O 2 , that prepares the uterus for the fertilized ovum and maintains pregnancy.
- puddingstone — any conglomerate rock having dark-colored, rounded pebbles that are embedded in a light-colored, fine-grained matrix
- pumice stone — abrasive stone used for exfoliating
- pumice-stone — Also called pumice stone. a porous or spongy form of volcanic glass, used as an abrasive.
- quarter tone — an interval equivalent to half of a semitone.
- quinacridone — Any of a group of synthetic organic compounds whose molecules contain three benzene and two pyridine rings arranged alternately. They include a number of red to violet pigments.
- ringing tone — phone: sound indicating connection is made
- russian zone — a zone in Germany controlled by the Soviet Union 1945–89.
- sarrusophone — a metal double-reed wind instrument with a conical bore, related to the oboe and used especially in military bands.
- shatter cone — a cone-shaped fragment of rock, probably formed by violent shock waves, as from meteoritic impact or atomic explosions
- sierra leone — an independent republic in W Africa: member of the Commonwealth of Nations; formerly a British colony and protectorate. 27,925 sq. mi. (72,326 sq. km). Capital: Freetown.
- spatter cone — a low, steep-sided volcanic cone built up of droplets or blobs of lava erupted from a fissure or vent.
- speakerphone — a telephone or telephone attachment equipped with both loudspeaker and microphone, thus permitting the instrument to be used without being held.
- sphygmophone — a device by which a pulse may be heard
- staddlestone — (formerly) one of several supports for a hayrick, consisting of a truncated conical stone surmounted by a flat circular stone
- stirrup bone — the stapes, one of the three bones of the middle ear
- tangier zone — a former internationalized zone on the Strait of Gibraltar: became a part of Morocco 1956. Compare Morocco (def 1).
- telegraphone — an early magnetic sound-recording device for use with wire, tape, or disks.
- testosterone — Biochemistry. the sex hormone, C 19 H 28 O 2 , secreted by the testes, that stimulates the development of male sex organs, secondary sexual traits, and sperm.
- the evil one — the devil; Satan
- the holy one — God
- theatrophone — a late 19th century service that allowed subscribers to listen to concerts or plays through the telephone
- thunderstone — any of various stones or fossils formerly thought to be fallen thunderbolts.
- towaway zone — See example at towaway.
- traffic cone — conical road markers
- wave cyclone — a cyclone that forms on a front and, in maturing, produces an increasingly sharp, wavelike deformation of the front.
- wood anemone — any of several anemones, especially Anemone nemorosa, of the Old World, or A. quinquefolia, of the U.S.