Learn how to say Mercerised correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word mercerize:
[with object] (usually as adjective mercerized)
treat (cotton fabric or thread) under tension with caustic alkali to impart strength and lustre:
shorts in white mercerized cotton
mid 19th century: from the name of John Mercer (died 1866), said to have invented the process, + -ize