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There are 9 thirteen-letter words containing H, 3O, 2R and 2T

ORTHOPTEROIDSorthopteroids n. Plural of orthopteroid.
ORTHOPTEROID n. a member of the Orthoptera, cockroaches.
ORTHOTROPISMSORTHOTROPISM n. vertical growth.
PHOTORECEPTORphotoreceptor n. (Biology) A specialized neuron or other structure able to detect and react to light.
PHOTORECEPTOR n. a receptor for light stimuli.
PROTOCHORDATEprotochordate n. Any chordate of the phyla Hemichordata, Urochordata or Cephalochordata.
PROTOCHORDATE n. a member of the Protochordata.
PROTOHISTORICprotohistoric adj. Of or pertaining to protohistory.
PROTOHISTORIC adj. relating to protohistory.
PROTOTROPHIESprototrophies n. Plural of prototrophy.
PROTOTROPHY n. the state of being prototrophic.
THOROUGHWORTSthoroughworts n. Plural of thoroughwort.
THOROUGHWORT n. a wild flower with perfoliate leaves.
TROPHOTROPISMtrophotropism n. The movements of the organs in a growing plant, as towards nutrient substances, induced by the chemical…
TROPHOTROPISM n. direction of growth by nutritional factors.
ULTRAORTHODOXultraorthodox adj. Very orthodox, chiefly among Jewish sects.
ultra-Orthodox adj. (Of a Jew) Very strictly observant; Haredi; being either Hasidic or Litvish (Misnagdic).
ULTRAORTHODOX adj. extremely orthodox.

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 WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 39 words
  • Scrabble in French: 4 words
  • Scrabble in Spanish: 3 words
  • Scrabble in Italian: 1 word
  • Scrabble in German: no word
  • Scrabble in Romanian: 5 words


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