IPA: //ˈsʌbˌsteɪdʒ//
KK: /ˈsʌbˌsteɪdʒ/
A part of a microscope that is located below the main stage and holds attachments like mirrors or condensers in place.
The substage of the microscope allows for better lighting and focus when viewing samples.
Substage → It is formed from "sub-" (meaning under or below) and "stage" (from Latin "stare", meaning to stand). The word refers to a stage that is positioned below another stage or level.
Think of something that is 'under' ('sub-') another 'stage' — that's why substage means a lower level or phase.