What does the suffix dia mean?

Answer 1

Definition: prefix (dia-) - across, through

Examples:

diaphragm (dia-phragm) - sheet of muscles that separate the abdominal cavity from the thoracic cavity

Answer 2

With '-dir/-der' infinitive verbs, it indicates the imperfect, e.g.

vender - to sell; vendia - used to sell, was selling

pedir - to ask; pedia - used to ask, was asking

(NB: there should be an accent over the 'i' in 'vendia' and 'pedia')

Answer 3

There is no suffix of dia. Dia- is a prefix that means through.