1. Being one more than nine
   - ten, 10

1. The 24th letter of the Roman alphabet
   - X, ex

1. Street names for methylenedioxymethamphetamine
   - Adam, ecstasy, XTC, go, disco biscuit, cristal, hug drug 
2. The cardinal number that is the sum of nine and one; the base of the decimal system
   - ten, 10, tenner, decade

Derived forms: Xs, xs

See also: cardinal

Type of: alphabetic character, large integer, letter, letter of the alphabet, MDMA, methylenedioxymethamphetamine

Part of: Latin alphabet, Roman alphabet

Encyclopedia: X X, Y X, The Exterminator X,Y, and Zee

• in-house
• in-joke
• in-law
• in-line skate
• in-migration
• in-person
• in-service
• in-situ
• in-tray
• in-your-face
• inability
• inaccessibility
• inaccessible
• inaccessibly
• inaccuracy
• inaccurate
• inaccurately
• Inachis
• Inachis io
• inaction
• inactivate
• inactivation
• inactive
• inactively
• inactiveness