10-letter words containing t, h, y, o
- pennyworth — as much as may be bought for a penny.
- periphyton — the community of tiny organisms, as protozoans, hydras, insect larvae, and snails, that lives on the surfaces of rooted aquatic plants.
- petroglyph — a drawing or carving on rock, made by a member of a prehistoric people.
- phagocytic — any cell, as a macrophage, that ingests and destroys foreign particles, bacteria, and cell debris.
- phenocryst — any of the conspicuous crystals in a porphyritic rock.
- phenotypes — the observable constitution of an organism.
- phenotypic — the observable constitution of an organism.
- philomathy — an enjoyment of and passion for learning new facts and acquiring new knowledge
- phlebotomy — the act or practice of opening a vein for letting or drawing blood as a therapeutic or diagnostic measure; venesection; bleeding.
- photically — in a photic manner, by way of photic processes
- photoglyph — an engraved plate, produced by the action of light, and from which prints or impressions are taken
- photolyses — the chemical decomposition of materials under the influence of light.
- photolysis — the chemical decomposition of materials under the influence of light.
- photometry — the measurement of the intensity of light or of relative illuminating power.
- photonasty — a nastic movement in response to a change in light intensity
- photopathy — movement of an organism in response to the intensity of light, especially away from the source of light.
- photophony — the practice of using a photophone
- photostory — photo essay.
- phototropy — an alteration in the colour of certain substances as a result of being exposed to light of different wavelengths
- phycobiont — the algae component of a lichen.
- phyllotaxy — the arrangement of leaves on a stem or axis.
- physiocrat — one of a school of political economists who followed Quesnay in holding that an inherent natural order properly governed society, regarding land as the basis of wealth and taxation, and advocating a laissez-faire economy.
- physiotype — the set of physical features that make a person or organism different from others.
- phytogenic — of plant origin.
- phytoplasm — protoplasm of a plant or plants.
- phytotoxic — of or relating to phytotoxin.
- phytotoxin — any toxin, as ricin or crotin, produced by a plant.
- polyanthus — a hybrid primrose, Primula polyantha.
- polychaete — any annelid of the class Polychaeta, having unsegmented swimming appendages with many setae or bristles.
- polychrest — a thing which has adapted to multiple uses
- polyethnic — inhabited by or consisting of people of many ethnic backgrounds.
- polyhalite — a type or pink or red mineral
- polyhistor — a person of great and varied learning.
- polymathic — a person of great learning in several fields of study; polyhistor.
- polyrhythm — the simultaneous occurrence of sharply contrasting rhythms within a composition.
- polytheism — the doctrine of or belief in more than one god or in many gods.
- polytheist — the doctrine of or belief in more than one god or in many gods.
- pottymouth — a person who habitually uses foul language
- prehistory — human history in the period before recorded events, known mainly through archaeological discoveries, study, research, etc.; history of prehistoric humans.
- protonymph — the newly hatched form of various mites
- protophyte — a single-celled plant of the class Protophyta
- psilophyte — any plant that is adapted to grow well in the dry savannah
- psychopath — a person with a psychopathic personality, which manifests as amoral and antisocial behavior, lack of ability to love or establish meaningful personal relationships, extreme egocentricity, failure to learn from experience, etc.
- pyrethroid — any of several synthetic compounds that are similar to but more persistent than natural pyrethrins.
- pyrotechny — the art of making fireworks
- pyrrhotite — a common mineral, iron sulfide, approximately FeS but variable because of a partial absence of ferrous ions, occurring in massive and in crystal forms with a bronze color and metallic luster; magnetic pyrites: generally slightly magnetic.
- pyrrophyta — a phylum in the kingdom Protista comprising the dinoflagellates and cryptomonads.
- pyrrophyte — any of various single-celled, biflagellated algae, of the phylum Pyrrophyta, especially the dinoflagellates.
- pythagoras — c582–c500 b.c, Greek philosopher, mathematician, and religious reformer.
- pythogenic — originating from filth or putrescence.