shorthand

Short definition from Wiktionary

Noun

1. 1
   A rough and rapid method of writing by substituting symbols for letters, words, etc.
2. 2
   Any brief or shortened way of saying or doing something.

Verb

1. 1
   To render (spoken or written words) into shorthand.
2. 2
   To use a brief or shortened way of saying or doing something.
3. 3
   To write in shorthand.