Following the MII is the Individual Account Identifier, which can vary in length from seven to twelve digits. This number makes up the remaining numbers on the card with the exception of the last digit.
Automated Clearing House (also referred to as ACH) is the network that processes electronic financial transactions in the United States. This contains large volumes of credit and debit transactions in batches from a variety of different types of organizations and businesses.
â¢ STH (noun). The noun STH has 1 sense: 1. a hormone produced by the anterior pituitary gland; promotes growth in humans. Familiarity information: STH used as a noun is very rare. hormone produced by the anterior pituitary gland; promotes growth in humans. Classified under: Nouns denoting body parts. Synonyms: growth hormone; human growth hormone; somatotrophic hormone; somatotrophin; somatotropic hormone; somatotropin; STH.