indicator; display item; something indicative of
A formal or technical noun meaning something that indicates, displays, or represents something else. Often used in legal, technical, or official contexts.
This document will be kept as an indicator of the contract details.
At the exhibition, many display items for the new products were lined up.
標示物 is a near-synonym often used for signs or markers, especially in traffic or public guidance contexts. 表示物 is broader and can include any item that indicates something.
Compound of 表示 (display, indication) and 物 (thing, object). The exact historical derivation is uncertain, but the word follows a common pattern for forming technical nouns.