4

Is there a word to describe a gathering lump of water hanging on a surface that has not yet produced a droplet? Imagine a small pool of water without the surface upon which it's resting.

7

I agree with camelbrush's answer, but I also thought of the less technical word of bead.

As a noun, bead means:

any small globular or cylindrical body, as a drop of liquid or a bubble in an effervescent liquid: beads of sweat.

As a verb, bead means:

to bead, to form into beads or drops

I think of a bead as a droplet forming, but before it drops as a droplet.

6

The word you are looking for is pendant as in this wiki entry, and I remember it from physics lectures about surface tension. But technically, a pendant is also a drop, and a drop is defined as :

A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces. A drop may form when liquid accumulates at the lower end of a tube or other surface boundary, producing a hanging drop called a pendant drop.

Also, there is an adjective: Pendent, which is used for anything hanging down.

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