Definition of underset in US English:

underset

verbundersets, undersetting

[with object]
Pronunciation /ˌəndərˈset//ˌəndərˈsɛt/
rare
  • Place (something) under something else, especially for support.

nounPlural undersets

Pronunciation /ˈəndərˌset//ˈəndərˌsɛt/

Pronunciation

underset

Verb/ˌəndərˈsɛt/

underset

Noun/ˈəndərˌsɛt/