- any of up to seven energy levels on which an electron may exist within an atom, the energies of the electrons on the same level being equal and on different levels being unequal.
- a group of nucleons of approximately the same energy.
- a scab on the surface of an ingot.
- a length of unfinished tubing.
- a pierced forging.
- a hollow object made by deep drawing.
Origin of shell
OTHER WORDS FROM shellshell-less, adjectiveshell-like, adjectivede-shell, verb (used with object)
Other definitions for shell (2 of 2)
usage note for she'll
How to use shell in a sentence
And without physical evidence, cases often come down to “he said/she said.”No Wonder Cosby's Keeping Quiet: He Could Still Be Prosecuted|Jay Michaelson|November 23, 2014|DAILY BEAST
After that, they agreed that LL would warn Foxx before striking him again.Co-Stars Who Hated Each Other: Ryan Gosling and Rachel McAdams in 'The Notebook' and More|Marlow Stern|July 4, 2014|DAILY BEAST
They would later be dubbed a “bloodthirsty” “lesbian she-wolf pack” and—most famously—“a seething, Sapphic septet.”‘Out in the Night’ and the Redemption of the ‘Killer Lesbian Gang'|Nina Strochlic|June 21, 2014|DAILY BEAST
This is just one voter out of many, naturally, but he/she has enough to say for an army.A Tony Voter on Bryan Cranston’s Overrated LBJ, Neil Patrick Harris’s Underwhelming Hedwig|Michael Musto|June 4, 2014|DAILY BEAST
No he-said-she-said, no muffled sounds through the dorm ceiling, no “Maybe he has other issues.”Your Princess Is in Another Castle: Misogyny, Entitlement, and Nerds|Arthur Chu|May 27, 2014|DAILY BEAST
Joseph Towers died; a printer, bookseller, and afterwards a preacher with the title of LL.The Every Day Book of History and Chronology|Joel Munsell
He remarked, very acutely, that Chaucer translates the F. bouton by the word knoppe; see ll.
But the names, even in the F. text, are not exactly the same as in a former passage; see ll.
I take iowell (with a bar through the ll) to be the usual (Northern) contraction for Iowellis, jewels; F. text, joiau, pl.
As these lines are not in the original, the writer may have taken them from Chaucer's Hous of Fame, ll.
British Dictionary definitions for shell (1 of 2)
- a class of electron orbits in an atom in which the electrons have the same principal quantum number and orbital angular momentum quantum number and differences in their energy are small compared with differences in energy between shells
- an analogous energy state of nucleons in certain theories (shell models) of the structure of the atomic nucleus
Derived forms of shellshell-less, adjectiveshelly, adjective
Word Origin for shell
British Dictionary definitions for shell (2 of 2)
Scientific definitions for shell
- The usually hard outer covering of certain animals, such as mollusks, insects, and turtles.
- The hard outer covering of a bird's egg.
- The hard outer covering of a seed, nut, or fruit.
- A set of electron orbitals that have nearly the same energy. Electrons in outer shells have greater energy than those in shells closer to the nucleus. Elements in the Periodic Table range from the lightest elements with electrons normally occupying one shell (hydrogen and helium) to the heaviest, with electrons in seven shells (radium and uranium, for instance). See more at atomic spectrum orbital subshell. See Note at metal.
- Any of the stable states of other particles or collections of particles (such as the nucleons in an atomic nucleus) at a given energy or small range of energies.
Other Idioms and Phrases with shell
In addition to the idiom beginning with shell
- shell out
- in one's shell