fus-, fun-, fund-, fut-, found-

(Latin > French: pour, melt, blend)

founder (s) (noun), founders (pl)
Someone who creates or who establishes something which is meant to last for a long time; such as, a business, an educational institution, etc.: "Jonathan is the founder of a newspaper empire."

"Estella is the daughter of the university's founder."

founder (verb), founders; foundered; foundering (verb forms)
1. A ship filling with water and sinking: "The ship foundered during the severe storm."
2. To become submerged; to become filled with water and to sink: "The crew escaped as the ship was foundering, but before it sank into the ocean."
3. To experience failure: "Jacob's career foundered and he had to move from job to job for many years."
4. The term founder also has an established pleonastic sense as part of the idiomatic "founder and sink".
foundry (s) (noun), foundries (pl)
1. A factory where metal castings are produced.
2. A building equipped for the casting of metal or glass.
funnel (s) (noun), funnels (pl)
A cone-shaped utensil with a large opening at the top and a small opening or tube at the bottom; used to channel the flow of substances or liquids into a container with a small mouth.
fuse (s) (noun), fuses (pl)
1. An electrical safety device that contains a piece of metal that melts if the current running through it exceeds a particular level and thereby can interrupt the flow of electrical current when it is overloaded.
2. A cord of readily combustible material that is lighted at one end to carry a flame along its length to detonate an explosive at the other end.
3. A slow-burning wick or other device used to set off a shell, bomb, a blast of gunpower, or other explosive charge.
4. Etymology: "a combustible cord" or "a tube for lighting an explosive device"; also fuze, 1640's, from Italian fuso, "spindle" (because the originals were long, thin tubes filled with gunpowder); from Latin fusus, "spindle".

Influenced by French fusée, "spindleful of hemp fiber" and from outdated English fusee, "musket fired by a fuse".

The reference to "a device that breaks an electrical circuit" was first recorded in 1884; and it was named because of its shape and it was not derived from the origin of this "Italian fuse".

fuse (verb), fuses; fused; fusing
1. To join or to become joined because of heat or a chemical reaction: "The melted metals fused with each other."
2. To join or to combine different things together: "Their musical compositions are fusing a variety of classical pieces."
fusible (adjective)
A description of metals and other materials that are easily melted or liquefied by heating; such as, fusible alloys.
fusion (s) (noun), fusions (pl)
1. The act or procedure of liquefying or melting by the application of heat.
2. The merging of different elements into a union; such as, the fusion of copper and zinc to form brass.
3. A union resulting from fusing; for example, a fusion of religion and politics emerged when the leaders got together to iron out their differences.
4. Correction of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization.
5. The merger or a blending of two or more things; such as, materials or ideas.
6. The process of melting or the conversion of a solid into a liquid by means of heat or pressure.
7. A nuclear process in which two light nuclei combine at extremely high temperatures to form a heavier nucleus and release vast amounts of energy.

The energy of the sun and other stars is believed to derive from fusion reactions.

fusion reactor (s) (noun), fusion reactors (pl)
A nuclear reactor that produces energy by fusing light nuclei together, instead of splitting heavy nuclei apart as in the fission process.
fusiophilist (s) (noun), fusiophilists (pl)
A collector of muskets.
futile (adjective)
1. Having no practical effect or useful result.
2. Lacking serious value, substance, or a sense of responsibility.
3. Trifling and frivolous; idle.
4. Etymology: from Middle French (about 1400 to 1600) futile, from Latin futilis, "vain, worthless, futile"; literally, "pouring out [of a vessel] easily"; therefore, "easily emptied, leaky, unreliable"; from fundere, "to pour, to melt".
futilely (adverb)
In a manner that is incapable of producing results; useless; not successful; not worth attempting.
futility (adjective)
1. Uselessness as a consequence of having no practical result.
2. Lack of importance or purpose; frivolousness.
hydrodiffusion (s) (noun), hydrodiffusions (pl)
1. The diffusion of a substance through water.
2. The diffusion of one liquid through another liquid.
immunotransfusion (s) (noun), immunotransfusions (pl)
An indirect transfusion in which the donor is first immunized by means of injections of an antigen prepared from microorganisms isolated from the recipient; later, the donor's blood is collected, defibrinated, and then administered to the patient.

The latter is then presumably passively immunized by means of an antibody formed in the donor; for example, an antibody that reacts with the microorganisms in the patient.