16 across
It’s
seen
amongst
beta,
lambda
and
others
(2,2)
It’s seen amongst beta, lambda and others (2,2)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at and others — that's your definition, since "et al" literally means that. The wordplay's a hidden word job: "amongst" tells you to burrow inside "beta, lambda" and there it is, sitting across the join — b-ET-AL-ambda.