#54 trough/trench

open
nobody
None
5
2009-03-04
2009-03-04
Chris Mungall
No

ENVO:00000499 ! trough *** [SYNONYM: "deep" (related)] [SYNONYM: "deep" (related)] [SYNONYM: "deep" (related)] [SYNONYM: "foredeep" (related)] [SYNONYM: "swale" (related)] [SYNONYM: "trench" (exact)] [SYNONYM: "trough (seafloor)" (exact)] [DEF: "A linear structural depression that extends laterally over a distance, while being less steep than a trench. A trough can be a narrow basin or a geologic rift. There are various oceanic troughs, troughs found under oceans; examples include the rift along the mid-oceanic ridge and the Cayman Trough."]

going by the def, trench should be a related synonym; or in fact, not needed:

ENVO:00000275 ! ocean trench

already has this as a synonym

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