
1) Latin roll-call reply 2) Roll-call answer
Found on
https://www.crosswordclues.com/clue/adsum

Latin, meaning: to assist, be present, be near, be in attendance,
Found on
http://archives.nd.edu/aaa.htm

Adsum is Latin for I am here
Found on
http://www.probertencyclopaedia.com/Y.HTM

adsum Present. A formal answer to a roll call which literally means, 'I am here.'
Found on
http://www.wordinfo.info/words/index/info/view_unit/3055/10

present (formal answer to a rollcall)
Found on
https://www.businessballs.com/glossaries-and-terminology/latin-terms-and-ph

I am present.
Found on
https://www.infoplease.com/dictionary/adsum

to assist, be present, be near, be in attendance,
Found on
https://www.math.ubc.ca/~cass/frivs/latin/latin-dict-full.html
No exact match found.