An existential marker is a word, found in a distinct clause type, which marks a referent's existence.
(Spanish)
The word hay in the following sentence is an existential marker:
hay muchos libros en la biblioteca
EXIST many books in the library
‘There are many books in the library.’
This page is an extract from the LinguaLinks Library. Version 5.0 published on CD-ROM by SIL International, 2003.