Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
invariant
invasion
invasionary technology
invasive
invective
inveigh
inveigle
invent
invention
inventive
inventor
inventory
inventory movement
inventory turnover
inveracity
Inverclyde
Inverness
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

invalid (1)

in·va·lid [ in vállid ]


adjective 
Definition:
 
1. flawed: not acceptable or correct through being based on a mistake or employing flawed reasoning

2. not legal: not legally binding or enforceable

[Mid-16th century. < Latin invalidus "not strong" < validus (see valid)]

in·va·lid·ly adverb
Advertisement

© 2009 Microsoft