tunneling
Americannoun
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the act or process of creating a tunnel.
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Physics. in quantum mechanics, the phenomenon in which a particle passes through a potential barrier that it would not be able to cross under classical physics; the probability of tunneling depends on the thickness of the barrier and the energy of the particle.
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Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Researchers also identified a protein called MYO10 as critical for creating the tunneling nanotubes that allow mitochondria to move between cells.
From Science Daily • May 24, 2026
This compact book weaves together topics including the microscopic quantum tunneling required for nuclear fusion and the macroscopic geometry of spacetime.
From The Wall Street Journal • May 19, 2026
Longtime critics of subways used the explosion to stoke community fears that tunneling would lead to exploding homes.
From Los Angeles Times • May 7, 2026
Surfshark Starter includes core VPN features such as ad blocking, split tunneling, a kill switch and MultiHop, and is priced at $15.45/month, $3.19/month for the one-year plan and $1.99/month for the two-year plan.
From Salon • Mar. 27, 2026
I scrounged deep into the rubble of collapsed buildings, tunneling for coal bins.
From "Milkweed" by Jerry Spinelli
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.