Lets play a word game. Following are some meaningless words that can be completed adding random letters on either sides of the word.

For an example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

The words can be re structured as:
Recalculate
Hairball (or airbag)
Principal
Antibacterial
Guideline
Algorithm
Signal
Keyhole

Discussion