Unknown landmasses Synonyms

We can't find synonyms for the phrase "Unknown landmasses", but we have synonyms for terms, you can combine them.

Unknown Synonyms

Landmasses Synonyms

UL abbreviation

UL is an abbreviation for Unknown Landmasses

What does UL stand for?

UL stands for "Unknown Landmasses"

Definitions for Unknown

(adjective) happening or existing without one's knowledge
(adjective) not known or experienced before
(adjective) not widely known