black sigatoka

noun

: a serious leaf spot disease of bananas caused by an ascomycetous fungus (Mycosphaerella fijiensis) and marked initially by small, dark brown streaks on the lower surface of the leaf

Banana researchers recently discovered black sigatoka, a disease that attacks banana leaves, on local crops.

—Ryan Maldonado, Miami Herald, 7 Jan. 1999

The plants have been genetically modified to resist black sigatoka, a leaf spot disease caused by the fungus Mycosphaerella fijiensis.

—Anne Dauwers, Nature, 28 June 2007

also : the causative fungus

Another dark shadow is black sigatoka, a fungus that turns banana leaves black and blocks photosynthesis.

—David Grimm, Science, 14 Dec. 2008

Word History

First Known Use

1980, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now