• Webster's Revised Unabridged Dictionary
    • n Decrescent (Her) A crescent with the horns directed towards the sinister.
    • a Decrescent Becoming less by gradual diminution; decreasing; as, a decrescent moon.
    • ***
Century Dictionary and Cyclopedia
    • decrescent Decreasing; becoming gradually less; waning, as the moon.
    • decrescent Specifically— In heraldry, decreasing or waning: said of the moon when represented with the points toward the sinister side. Also decours.
    • decrescent In botany, diminishing gradually from below upward.
    • n decrescent In heraldry, the moon in her decrement: used as a bearing. See decrement, 3.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Decrescent de-kres′ent becoming gradually less
    • n Decrescent (mus.) = Diminuendo (q.v.)
    • ***


Webster's Revised Unabridged Dictionary
L. decrescens, p. pr. of decrescere,. See Decrease


In literature:

Azure, a moon decrescent, proper.
"The Manual of Heraldry; Fifth Edition" by Anonymous
Thin scuds flew swiftly over the moon's decrescent form.
"Alonzo and Melissa" by Daniel Jackson, Jr.
Thin scuds flew swiftly over the moon's decrescent form.
"Alida" by Amelia Stratton Comfield

In science:

L’argomento dell’esponenziale sar`a minore di uno per (k − k0 ) < ∆k e maggiore di uno se (k−k0 ) > ∆k : nel secondo dei due casi f (k−k0 ) decrescer`a esponenzialmente con ((k−k0 )/∆k)2 .
Tempi di Tunnelling (Tunneling Times)