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The word convex means curving out or bulging outward.

Convex

The word convex means curving out or bulging outward.

"Gules, a dolphin naiant embowed or. EMBOWED. Any thing bent or curved, like a bow." -Hall, 1862

Dolphin Embowed

"Gules, a dolphin naiant embowed or. EMBOWED. Any thing bent or curved, like a bow." -Hall, 1862

"The action of the siphon illustrates the effect of atmospheric pressure. It is simply a bent tube having unequal branches, open at both ends, and is used to convey a liquid from a higher point to a lower, over an intermediate point higher than either." — Hallock, 1905

Siphon

"The action of the siphon illustrates the effect of atmospheric pressure. It is simply a bent tube having…

"Take a tube bent like the letter U, and, having filled it with water, place a finger on each end, and in this state plunge one of the ends into a vessel of water, so that the end in the water shall be a little the highest then remove the fingers and the liquid will flow out, and continue to do so until the vessel is exhasted." -Comstock 1850

Syphon

"Take a tube bent like the letter U, and, having filled it with water, place a finger on each end, and…