List of 13-letter words ending with

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There are 8 thirteen-letter words ending with X

ARCHAEOPTERYX	• archaeopteryx n. Alternative spelling of archeopteryx. • Archaeopteryx prop.n. A taxonomic genus within the family Archaeopterygidae – known from fossils and widely accepted as the… • archæopteryx n. Rare spelling of archeopteryx.
CEPHALOTHORAX	• cephalothorax n. The fused head and thorax of spiders and crustaceans. • CEPHALOTHORAX n. the body, or head with thorax, of spiders, crustaceans, etc.
HIERACOSPHINX	• hieracosphinx n. A mythical beast found in Egyptian sculpture and European heraldry, being a lion with the head of a falcon. • HIERACOSPHINX n. in ancient Egyptian art, a hawk-headed sphinx.
IMMUNOCOMPLEX	• immunocomplex n. The complex formed between an antigen and an antibody. • IMMUNOCOMPLEX n. a complex formed between an antibody and an antigen.
IMPROVISATRIX	• improvisatrix n. A female that improvises. • IMPROVISATRIX n. (archaic) a female improvisator, also IMPROVISATRICE.
INTERLOCUTRIX	• interlocutrix n. A female interlocutor. • INTERLOCUTRIX n. a female interlocutor, also INTERLOCUTRESS, INTERLOCUTRICE.
PRIMOGENITRIX	• primogenitrix n. A female primogenitor. • PRIMOGENITRIX n. a female ancestor.
ULTRAORTHODOX	• ultraorthodox 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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English Wiktionary: 127 words
Scrabble in French: 77 words
Scrabble in Spanish: no word
Scrabble in Italian: 1 word
Scrabble in German: no word
Scrabble in Romanian: no word

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