/ ˈsiːpiə; NAmE / noun [ U ]
1.
a brown substance used in inks and paints and used in the past for printing photographs
2.
a reddish-brown colour
► sepia adjective [ usually before noun ]:
sepia ink / prints / photographs
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WORD ORIGIN
late Middle English (denoting a cuttlefish): via Latin from Greek sēpia cuttlefish. The current senses date from the early 19th cent.