inner marker

noun

A type of marker beacon placed to indicate when an aircraft crosses the runway threshold of a Category II or Category III ILS or IGS approach, triggering a continuous visual and aural sequence of rapid-fire Morse code dots from the marker beacon receiver in the cockpit of an aircraft flying over the marker.

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Meanings

nouninner marker (plural inner markers)

plural inner markers

  1. aeronauticsA type of marker beacon placed to indicate when an aircraft crosses the runway threshold of a Category II or Category III ILS or IGS approach, triggering a continuous visual and aural sequence of rapid-fire Morse code dots from the marker beacon receiver in the cockpit of an aircraft flying over the marker.

    Synonyms: IM

Synonyms & antonyms

nounA type of marker beacon placed to indicate when an aircraft crosses the runway threshold of a Category II or Category III ILS or IGS approach, triggering a continuous visual and aural sequence of rapid-fire Morse code dots from the marker beacon receiver in the cockpit of an aircraft flying over the marker.

Similar
IM
Cite this entry
APA

inner marker. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/inner%20marker

MLA

“inner marker.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/inner%20marker. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “inner marker,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/inner%20marker.

Source: inner marker on Wiktionary, CC BY-SA 4.0.