Heb. gad, (Ex. 16:31; Num. 11:7), seed to which the manna is likened in its form and colour. It is the Coriandrum sativum of botanists, an umbelliferous annual plant with a round stalk, about two feet high. It is widely cultivated in Eastern countries and in the south of Europe for the sake of its seeds, which are in the form of a little ball of the size of a peppercorn. They are used medicinally and as a spice. The Greek name of this plant is korion or koriannon, whence the name “coriander.”
Coriander
2 verses
Exodus
Exodus 16:31
And the house of Israel called the name thereof Manna: and it was like coriander seed, white; and the taste of it was like wafers made with honey.
Numbers
Numbers 11:7
And the manna was as coriander seed, and the colour thereof as the colour of bdellium.
From Easton's Bible Dictionary
Matthew George Easton, 1897