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Webster 1913 Edition


Cusp

Cusp

(kŭsp)
,
Noun.
[L.
cuspis
,
-idis
, point, pointed end.]
1.
(Arch.)
A triangular protection from the intrados of an arch, or from an inner curve of tracery.
2.
(Astrol.)
The beginning or first entrance of any house in the calculations of nativities, etc.
3.
(Astron)
The point or horn of the crescent moon or other crescent-shaped luminary.
4.
(Math.)
A multiple point of a curve at which two or more branches of the curve have a common tangent.
5.
(Anat.)
A prominence or point, especially on the crown of a tooth.
6.
(Bot.)
A sharp and rigid point.

Cusp

,
Verb.
T.
[
imp. & p. p.
Cusped
(kŭspt)
;
p. pr. & vb. n.
Cusping
.]
To furnish with a cusp or cusps.

Webster 1828 Edition


Cusp

CUSP

,
Noun.
[L., a point.] The point or horn of the moon or other luminary.

Definition 2024


cusp

cusp

English

Noun

cusp (plural cusps)

  1. A sharp point or pointed end.
  2. (figuratively) An important moment when a decision is made that will determine future events.
    • 2012 April 21, Jonathan Jurejko, “Newcastle 3-0 Stoke”, in BBC Sport:
      Newcastle were 11 points adrift of Spurs following their 5-0 mauling at the hands of the north London club in February.
      But a sixth successive Premier League win puts them on the cusp of European football next season as they surged 15 points clear of seventh-placed Everton, who have five games left to play.
  3. (geometry) A point of a curve where the curve is continuous but has no derivative, but such that it has a derivative at every nearby point.
  4. (architecture) A point made by the intersection of two curved lines or curved structures. A common motif in Gothic architecture.[1]
  5. (astrology) A boundary between zodiacal signs and houses.
  6. (dentistry) Any of the pointed parts of a canine tooth or molar.

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References

  1. Russell Sturgis, ed. (1902). A Dictionary of Architecture and Building: Biographical, Historical, and Descriptive. 3. Macmillan.