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List of 13-letter words containing

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There are 17 thirteen-letter words containing L, N and 4O

CHRONOBIOLOGYchronobiology n. (Biology) The study of the effects of time on biological systems, especially the effects of periodicity.
CHRONOBIOLOGY n. the study of biological rhythms.
COLONOSCOPIEScolonoscopies n. Plural of colonoscopy.
COLONOSCOPY n. examination of the inside of the colon using a colonoscope, a flexible viewing instrument passed into the colon through the anus.
GEOCHRONOLOGYgeochronology n. (Uncountable) The science of dating samples of rock or sediment.
geochronology n. (Countable) Any one of the methods by which the age of different samples of rock can be determined.
geochronology n. (Uncountable) The division of ancient time into named subdivisions / periods.
GNOMONOLOGIESgnomonologies n. Plural of gnomonology.
GNOMONOLOGY n. a treatise on gnomonics.
HOMOLOGATIONShomologations n. Plural of homologation.
HOMOLOGATION n. confirmation, agreement.
HOMOLOGOUMENAHomologoumena n. (Christianity) Those books of the New Testament which were acknowledged as canonical by the early church;…
HOMOLOGOUMENA n. the books of the New Testament whose authenticity was universally acknowledged in the early Church, also HOMOLOGUMENA.
MONOCOTYLEDONmonocotyledon n. (Botany) Any plant whose seedlings typically have one cotyledon (seed leaf) (in contrast to the two…
MONOCOTYLEDON n. a plant having a single cotyledon, also MONOCOT, MONOCOTYL.
NONGONOCOCCALnongonococcal adj. Not gonococcal.
NONGONOCOCCAL adj. not caused by a gonococcus.
NONHOMOLOGOUSnonhomologous adj. (Genetics) Not homologous.
NONHOMOLOGOUS adj. not homologous.
ODONATOLOGIESODONATOLOGY n. the study of dragonflies.
ODONATOLOGISTodonatologist n. One who studies odonatology.
ODONATOLOGIST n. one who studies dragonflies.
ODONTOGLOSSUModontoglossum n. Any of very many orchids of the genus Odontoglossum.
ODONTOGLOSSUM n. any of a genus of widely cultivated tropical American orchids.
ODONTOLOGICALodontological adj. (Rare) referring or pertaining to odontology; dental.
ODONTOLOGICAL adj. relating to odontology, also ODONTOLOGIC.
ODONTOLOGISTSodontologists n. Plural of odontologist.
ODONTOLOGIST n. a student of odontology.
ONOMATOLOGIESonomatologies n. Plural of onomatology.
ONOMATOLOGY n. the science of names.
ONOMATOLOGISTonomatologist n. One versed in the history of names.
ONOMATOLOGIST n. one who studies onomatology, the science of names.
POLYPROTODONTpolyprotodont n. Any marsupial of the order Polyprotodontia.
POLYPROTODONT n. any member of the Polyprotodontia, the suborder of marsupials, including opossums, dasyures, etc., with many small incisors.

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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