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UL
+++++ Underwriters Laboratory
/---- upload
/---- unit level
AcroLexic: Dictionary of Acronyms and Abbreviations contains 8 more definitions of “UL”.
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See also

Acronym Definitions
MUL 7
ULC 7
NUL 6
CUL 5
ULP 5
ULS 4
ULN 4
ULA 4
SUL 3
MULTICS 3
ULR 3
RUL 3
LUL 3
SCULP, 3
MULE 3
ULTRA 3
ULCC 3
ULSI 3
ULM 3
EUL 2