15-letter words containing h, a, c, i, o
- nonhierarchical — Classified or arranged so that a group or person has the same authority as everyone else; not hierarchical.
- nonmathematical — of, relating to, or of the nature of mathematics: mathematical truth.
- nonmetaphorical — not metaphorical; literal
- nonphotographic — not involving photographic equipment or techniques
- nonpsychiatrist — a person who is not a psychiatrist
- nonpsychoactive — Not psychoactive.
- north caucasian — a language family including all the Caucasian languages north of the Caucasian divide, as Kabardian and the Circassian language proper, and a few between the divide and the Black Sea, as Abkhazian.
- not in the race — given or having no chance
- ochlocratically — In an ochlocratic way.
- oligosaccharide — any carbohydrate yielding few monosaccharides on hydrolysis, as two, three, or four.
- on the increase — growing, increasing
- once in a while — at one time in the past; formerly: I was a farmer once; a once powerful nation.
- ophthalmoscopic — Of, pertaining to or using an ophthalmoscope.
- orange chromide — an Asian cichlid fish, Etropus maculatus, with a brownish-orange spotted body
- orchestrational — Of or pertaining to orchestration.
- organized chaos — a complex situation or process that appears chaotic while having enough order to achieve progress or goals
- organochlorines — Plural form of organochlorine.
- orthoboric acid — boric acid (def 1). Compare ortho- (def 2).
- orthodontically — from an orthodontic point of view
- orthopaedic bed — a specially firm bed designed to help correct or ameliorate the discomfort of disorders of the spine and joints
- orthopaedically — in an orthopaedic manner
- orthopsychiatry — an approach to psychiatry concerned with the study and treatment of behavioral disorders, especially of young people.
- overachievement — to perform, especially academically, above the potential indicated by tests of one's mental ability or aptitude.
- package holiday — a holiday arranged by a travel company in which your travel and accommodation are booked for you
- pairs champions — competitors in or winners of a pairs championship
- palaeoanthropic — relating to palaeoanthropology
- paleogeophysics — (used with a plural verb) inferred geophysical conditions or processes of designated periods of the geologic past.
- paleolithic man — any of the prehistoric populations of humans, as the Cro-Magnon, living in the late Pliocene and the Pleistocene epochs.
- panoramic sight — an artillery sight that can be rotated horizontally in a full circle.
- paraheliotropic — (of leaves) turning away from light; sun-avoiding
- parthenogenetic — development of an egg without fertilization.
- patchwork quilt — cover sewn from patches of cloth
- pavel petrovich — Paul I (def 2).
- perchloric acid — a colorless, syrupy hygroscopic liquid, HClO 4 , an acid of chlorine containing one more oxygen atom than chloric acid: used chiefly as a reagent in analytical chemistry.
- phantom circuit — a circuit derived from two suitably arranged pairs of wires, each pair being a circuit (side circuit) and also acting as one half of an additional derived circuit, the entire system providing the capabilities of three circuits while requiring wires for only two.
- pharmacological — the science dealing with the preparation, uses, and especially the effects of drugs.
- phenakistoscope — an early form of a zoetrope in which figures are depicted in different poses around the edge of a disc. When the disc is spun, and the figures observed through the apertures around the edge of the disc, they appear to be moving
- phenomenalistic — the doctrine that phenomena are the only objects of knowledge or the only form of reality.
- philanthropical — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
- philosophically — of or relating to philosophy: philosophical studies.
- phonautographic — relating to a phonautograph or a piece of equipment that records sound visually by detecting the sound waves and indicating them on a graph
- phonemicization — a grouping of phonemes
- phoneticization — the representation of speech in writing using a system in which individual symbols reflect speech sounds in a regular manner
- phonocardiogram — the graphic record produced by a phonocardiograph.
- phonogramically — in a phonogramic manner
- phosphocreatine — a compound, C 4 H 1 0 O 5 N 3 P, found chiefly in muscle, formed by the enzymatic interaction of an organic phosphate and creatine, the breakdown of which provides energy for muscle contraction.
- phosphoric acid — any of three acids, orthophosphoric acid, H 3 PO 4 , metaphosphoric acid, HPO 3 , or pyrophosphoric acid, H 4 P 2 O 7 , derived from phosphorus pentoxide, P 2 O 5 , and various amounts of water.
- photoactivation — the activation or control of a chemical, chemical reaction, or organism by light, as the activation of chlorophyll by sunlight during photosynthesis.
- photodissociate — to split or break up molecules as a result of the absorption of photons
- photoelasticity — the phenomenon of double refraction of polarized light by a transparent substance under elastic stress, used to measure strain in elastic, transparent materials.