sel

1. (computing) Initialism of single-event latchup (a destructive internal short circuit produced by a particle of ionizing radiation striking a CMOS computer chip).abbreviationalt-ofcountableinitialismuncountable

2. (education, uncountable) Initialism of Social–emotional learning.Examples: "In a March interview conducted over email, Mr. Rufo stated that while social-emotional learning sounds “positive and uncontroversial” in theory, “in practice, SEL serves as a delivery mechanism for radical pedagogies such as critical race theory and gender deconstructionism.”"abbreviationalt-ofinitialismuncountable

3. (retail, countable) Initialism of shelf edge label.abbreviationalt-ofcountableinitialism