Strong's #4682: matstsah (pronounced mats-tsaw')
from 4711 in the sense of greedily devouring for sweetness; properly, sweetness; concretely, sweet (i.e. not soured or bittered with yeast); specifically, an unfermented cake or loaf, or (elliptically) the festival of Passover (because no leaven was then used):--unleaved (bread, cake), without leaven.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
matstsâh
1) unleavened (bread, cake), without leaven.
Part of Speech:
Usage:
This word is used 53 times:
2 Chronicles 35:17: "at that time, and the feast of unleavened bread seven days."
Ezra 6:22: "And kept the feast of unleavened bread seven days with joy: for the LORD"
Ezekiel 45:21: "the passover, a feast of seven days; unleavened bread shall be eaten."