What does I stand for?

Inverted

Intensitie

Isoleucine

A naturally occuring amino acid with a nonpolar side chain.

Interstate

Inertia

This is one factor affecting gain and low of speed of a ship. Heavier ships are slower to gain and lose speed than smaller of ships.

Incus

One of the three tiny bones in the middle ear. Sound impulses coming from the eardrum are conveyed from the malleus to the incus and from the incus to the stapes at the oval window to the inner ear. Incus is Latin for anvil.

Indent

Deformation of structural members caused by out off-plane loads like bottom slamming and bow impact forces, contact with other objects, etc.

Incubate

Integrity

Guarding against improper information modification or destruction, and includes ensuring information non-repudiation and authenticity.

Incombustible