List of 10-letter words beginning with

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There are 18 ten-letter words beginning with ON

ONBOARDING	• onboarding n. (Business) The process of bringing a new employee on board, incorporating training and orientation. • ONBOARDING n. the induction and assimilation of a new employee into a company or organization.
ONCOGENOUS	• ONCOGENOUS adj. relating to an oncogene, an agent producing cancerous tumours.
ONCOLOGIES	• oncologies n. Plural of oncology. • ONCOLOGY n. the science of tumors.
ONCOLOGIST	• oncologist n. (Oncology) A doctor or scientist who specializes in oncology. • ONCOLOGIST n. one who studies oncology.
ONCOLYTICS	• oncolytics n. Plural of oncolytic. • ONCOLYTIC n. an agent that destroys tumours.
ONCOMETERS	• oncometers n. Plural of oncometer. • ONCOMETER n. an instrument measuring change in the size of internal organs.
ONCOTOMIES	• oncotomies n. Plural of oncotomy. • ONCOTOMY n. incision into a tumour.
ONDOGRAPHS	• ondographs n. Plural of ondograph. • ONDOGRAPH n. an instrument for producing a graphical recording of an alternating current.
ONEIROLOGY	• oneirology n. The study of dreams and their interpretation. • ONEIROLOGY n. the study of dreams.
ONIONSKINS	• onionskins n. Plural of onionskin. • onion␣skins n. Plural of onion skin. • ONIONSKIN n. a very thin variety of paper.
ONOCENTAUR	• onocentaur n. A centaur with the body of an ass, instead of a prototypical horse. • ONOCENTAUR n. a kind of centaur, half-man and half-ass.
ONOMASTICS	• onomastics n. The branch of lexicology devoted to the study of names and naming, especially the origins of names. • ONOMASTICS n. the study of proper names or of terms used in a specialized field.
ONSETTINGS	• onsettings n. Plural of onsetting. • ONSETTING n. an incitement.
ONSHORINGS	• ONSHORING n. the practice of employing white-collar workers from abroad.
ONSLAUGHTS	• onslaughts n. Plural of onslaught. • ONSLAUGHT n. an attack.
ONTOGENIES	• ontogenies n. Plural of ontogeny. • ONTOGENY n. the development of an individual organism.
ONTOLOGIES	• ontologies n. Plural of ontology. • ONTOLOGY n. the branch of philosophy the deals with being.
ONTOLOGIST	• ontologist n. (Philosophy) A scholar or theorist of ontology, or an adherent of a particular ontological doctrine. • ONTOLOGIST n. one who is versed in or treats of ontology.

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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English Wiktionary: 221 words
Scrabble in French: 47 words
Scrabble in Spanish: 47 words
Scrabble in Italian: 86 words
Scrabble in German: no word
Scrabble in Romanian: 91 words

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