3 definitions in this view. Search all 509 terms by name, phrase or topic.
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- Science & measurementZenith
The point on the sky directly above an observer. Its position is defined relative to the observer's location rather than a fixed star.
Link to this term- Historical names & systemsZero-level decoder
A legacy digital-telephony decoder specified to produce an analog output of 0 dBm for a digital milliwatt test signal. The term describes a reference-level test relationship rather than silence or a zero-voltage output.
Reference: ISED Canada: terminal-equipment glossary
Link to this term- Computers & specificationsZero suppression
Omitting nonsignificant zeros when displaying or representing a number. The formatting rules must preserve significant digits and any place-value information needed to interpret the value.
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A starting point for understanding
Each entry gives a concise meaning and, where useful, a distinction or practical example. Topic labels identify the context; the same acronym can have several meanings. Historical names remain useful when reading older coverage.
Follow the linked Yenra guides for fuller explanations and the reference links for supporting documentation. Health, technical and regulatory terms describe concepts; individual decisions depend on the applicable evidence, equipment and circumstances.
Collection updated October 13, 2026. Full glossary · AI Glossary