cha'm

Noun

charm (countable and uncountable, plural charms)

1. An object, act or words believed to have magic power (usually carries a positive connotation).
   • a charm against evil

   Synonyms:

   incantation, spell, talisman, amulet, craft, fetish, juju, lucky charm, madstone, mascot

2. (in plural, often) The ability to persuade, delight or arouse admiration.
   • He had great personal charm.

   Synonyms:

   appeal, attraction, charisma

   Antonyms:

   boredom, dryness

3. A small trinket on a bracelet or chain, etc., traditionally supposed to confer luck upon the wearer.
   • She wears a charm bracelet on her wrist.

   Synonyms:

   amulet, dangle, ornament, craft, fetish, juju, lucky charm, madstone, mascot, mojo

4. (collective) A group of goldfinches or other songbirds, or sometimes hummingbirds.
   • It's a charm of hummingbirds, a rare sight.2020, Janine Urbaniak Reid, The Opposite of Certainty: Fear, Faith, and Life in Between, Thomas Nelson, page 263

   Synonyms:

   flock

5. (particle) A quantum number of hadrons determined by the number of charm quarks and antiquarks.
   • In trying to understand the long life of the psi particle, physicists postulated the notion of “charm.” Charm, they say, prevents the “easy” decay of particles and thus prolongs their lifetimes. U particles, Dr. Pert said, may carry the property of charm.1975 July 31, Sandra Blakeslee, “Another Particle Believed Discovered”, in The New York Times, →ISSN
6. A second-order measure of derivative price sensitivity, expressed as the instantaneous rate of change of delta with respect to time.

   Synonyms:

   delta decay, DdeltaDtime

See all 14 meanings of charm