1. Noun.  Want of activity or exertion; habitual indisposition to action or motion; sluggishness; apathy; insensibility.
  2. Noun.  Absence of the power of self-motion; inertia.
  3. Noun.  (chemistry) Quality of being unreactive with other chemical compounds or elements.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.