The story
From the shape of the letter U.
Etymology from Wiktionary, CC BY-SA 4.0.
U-tube
Today it means: A tube in the shape of a capital U, in certain applications having a semipermeable membrane in the middle. Full definition →
Today it means: A tube in the shape of a capital U, in certain applications having a semipermeable membrane in the middle. Full definition →
From the shape of the letter U.
Etymology from Wiktionary, CC BY-SA 4.0.