ECHOLOCATIONS
Scrabble letter values: E1C3H4O1L1O1C3A1T1I1O1N1S1 = 20
Definition
ECHOLOCATIONS is the plural of ECHOLOCATION.
noun ECHOLOCATION: determining the location of something by measuring the time it takes for an echo to return from it.
Synonyms of ECHOLOCATION: echo_sounding