From an English language dictionary.

note how the term differs from a *guided* missile, which is NOT thrown.
"ballistic" is the term that differeniates the two weapons.


ICBM
abbr.

intercontinental ballistic missile

inter-
pref.

Between; among: international
bal·lis·tic
adj.

Of or relating to the study of the dynamics of projectiles

pro·jec·tile
n.

A fired, thrown, or otherwise propelled object, such as a bullet, having no
capacity for self-propulsion.
A self-propelled missile, such as a rocket.