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There are 16 thirteen-letter words containing H, 2I, 3O, P and S

CONIDIOPHORESconidiophores n. Plural of conidiophore.
CONIDIOPHORE n. a hypha that produces conidia.
DICHROOSCOPICDICHROOSCOPIC adj. relating to a dichrooscope.
EOSINOPHILOUSEOSINOPHILOUS adj. staining readily with eosin, also EOSINOPHILIC.
HISTIOPHOROIDHISTIOPHOROID adj. related to a genus of swordfish.
IONTOPHORESISiontophoresis n. (Medicine) A treatment in which electrodes are put in contact with tissue and a voltage is applied in…
IONTOPHORESIS n. the introduction of an ionized substance, such as a drug, through intact skin by the application of a direct electric current.
ISODIMORPHOUSisodimorphous adj. Having the quality of isodimorphism.
ISODIMORPHOUS adj. showing isodimorphism, isomorphism between each of the two forms of a dimorphous substance.
OLIGOTROPHIESOLIGOTROPHY n. the state of being oligotrophic.
PHOTOEMISSIONphotoemission n. (Physics) the ejection of electrons from the surface of a solid by incident electromagnetic radiation.
PHOTOEMISSION n. the release of electrons from a usually solid material (as a metal) by means of energy supplied by incidence of radiation and esp. light.
PHOTOFISSIONSphotofissions n. Plural of photofission.
photofissions v. Third-person singular simple present indicative form of photofission.
PHOTOFISSION n. nuclear fission induced by gamma rays.
PHOTOIONISINGPHOTOIONISE v. to ionize by electromagnetic radiation, also PHOTOIONIZE.
PHOTOOXIDISEDPHOTOOXIDISE v. to undergo photooxidation, also PHOTOOXIDIZE.
PHOTOOXIDISESPHOTOOXIDISE v. to undergo photooxidation, also PHOTOOXIDIZE.
PHOTOOXIDIZESphotooxidizes v. Third-person singular simple present indicative form of photooxidize.
PHOTOOXIDIZE v. to undergo photooxidation, also PHOTOOXIDISE.
PHOTOPOSITIVEphotopositive adj. (Biology) having a positive phototropic or phototactic response; attracted by light.
PHOTOPOSITIVE adj. exhibiting positive phototropism or phototaxis.
PROTOHISTORICprotohistoric adj. Of or pertaining to protohistory.
PROTOHISTORIC adj. relating to protohistory.
TOXICOPHOBIASTOXICOPHOBIA n. the morbid fear of poisoning, also TOXIPHOBIA.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 50 words
  • Scrabble in French: 6 words
  • Scrabble in Spanish: 10 words
  • Scrabble in Italian: 3 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 14 words


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