13-letter words containing h, a, t, e, l
- opthalmoscope — Misspelling of ophthalmoscope.
- optical bench — an apparatus, as a special table or rigid beam, for the precise positioning of light sources, screens, and optical instruments used for optical and photometric studies, having a ruled bar to which these devices can be attached and along which they can be readily adjusted.
- orchestralist — a person who writes or arranges orchestral music
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- orthocephalic — having a medium or intermediate relation between the height of the skull and the breadth or length.
- orthoepically — In terms of correct pronunciation.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- orthogonalize — to make (vectors, functions, etc.) orthogonal.
- orthopaedical — Pertaining to orthopaedics; characteristic of orthopaedia.
- orthosilicate — a silicate mineral
- paleethnology — (formerly) the branch of ethnology concerned with the earliest or most primitive human societies.
- pallas athena — Also, Athene [uh-thee-nee] /əˈθi ni/ (Show IPA). Also called Pallas, Pallas Athena. the virgin deity of the ancient Greeks worshiped as the goddess of wisdom, fertility, the useful arts, and prudent warfare. At her birth she sprang forth fully armed from the head of her father, Zeus. Compare Minerva.
- palos heights — a city in NE Illinois, near Chicago.
- panel heating — heating of a room or building by means of wall, ceiling, floor, or baseboard panels containing heating pipes or electrical conductors.
- pantheologist — a student of, or expert in, pantheology
- parental home — a school for problem children.
- parenthetical — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- parnell shout — a social occasion where each person in a group pays for his or her own entertainment or meal
- patent holder — a person or company that holds a patent
- pearly whites — white and lustrous as a pearl.
- pebble heater — a heat exchanger utilizing refractory pellets to store and give off heat.
- pentadelphous — (of a plant) having its stamens arranged in five groups; (of stamens) being arranged in five groups
- penthemimeral — (of a caesura) occurring after the first penthemimer of a poetic line, i.e. in the middle of the third foot
- perchlorinate — to combine with the maximum proportion of chlorine.
- perilymphatic — the fluid between the bony and membranous labyrinths of the ear.
- peripherality — the quality of being peripheral
- perishability — subject to decay, ruin, or destruction: perishable fruits and vegetables.
- petrochemical — a chemical substance obtained from petroleum or natural gas, as gasoline, kerosene, or petrolatum.
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- phalansterian — of or relating to a phalanstery.
- phalansterism — a model of society in which members of a community live in the same space and share common belongings
- phallocentric — a doctrine or belief centered on the phallus, especially a belief in the superiority of the male sex.
- phelloplastic — an image or a representation that has been fashioned from cork
- phenobarbital — a white, crystalline powder, C 1 2 H 1 2 N 2 O 3 , used as a sedative, a hypnotic, and as an antispasmodic in epilepsy.
- phenomenality — highly extraordinary or prodigious; exceptional: phenomenal speed.
- phenylmethane — toluene.
- phlogisticate — to integrate or blend phlogiston with
- phosphorylate — to introduce the phosphoryl group into (an organic compound).
- photo gallery — display of collected photographs
- photoallergic — photosensitive.
- photochemical — the branch of chemistry that deals with the chemical action of light.
- photocopiable — able or legally permitted to be photocopied
- photogelatine — relating to photographic processes in which gelatine is used in receiving or transferring prints
- phototelegram — a telegram that is sent by means of phototelegraphy
- phraseologist — a person who treats of or is concerned with phraseology.
- physicalities — the physical attributes of a person, especially when overdeveloped or overemphasized.
- phytochemical — Also called phytonutrient. any of various bioactive chemical compounds found in plants, as antioxidants, considered to be beneficial to human health.
- phytoplankter — a minute organism which constitutes part of phytoplankton
- pitcher plant — any of various insectivorous New World bog plants of the genera Sarracenia, Darlingtonia, and Heliamphora, having tubular or trumpet-shaped leaves containing a liquid in which insects are trapped.
- plain-clothes — Plain-clothes police officers wear ordinary clothes instead of a police uniform.