inner marker
Word Rarity
Rare
Frequency: Zipf frequency 3.78 in modern English
17
Scrabble Score
11
Letters
4
Syllables
7
Unique Chars
Meaning
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.