The pound is the actual unit of measurement, while ib or Ibs which stands for libra, is the common abbreviation used in expressing pounds.
A shortened form of a word or phrase. “SKU is the abbreviation for Stock Keeping Unit”. Synonyms as short form, acronym, symbol, or shorthand, shortening.
The process of abbreviating something. “Nursing records must be written without abbreviation”.
“She felt a slight irritation at the abbreviation of her name”. A shortened form of a written word or phrase used in place of the whole word or phrase.