sel

A diminutive of the female given name Selena.

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

Initialism of Social–emotional learning.

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.”

Initialism of shelf edge label.