Used in the context of general equities. Trade whose size is only part of the total customer indication / order , usually done to avoid a compromise in price and also to get the customer started versus losing his total, larger, inquiry /order to a competitor.
PARTIAL
Meaning of PARTIAL in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012