different between convexity vs welt

English

Etymology

convex +? -ity

Noun

convexity (countable and uncountable, plural convexities)

1. The state of being convex.
2. A convex line or surface.
3. (finance) A measure of the curvature in the relationship between the prices and yields of bonds.

Antonyms

• concavity

Translations

English

Pronunciation

• IPA^(key): /w?lt/
• Rhymes: -?lt

Etymology 1

From Middle English welten, from Old English weltan, wieltan, from Proto-Germanic *waltijan?, from Proto-Indo-European *wel- (“to turn; wind; twist”). Cognate with German wälzen, Danish vælte, Swedish välta, Icelandic velta.

Verb

welt (third-person singular simple present welts, present participle welting, simple past and past participle welted)

1. (intransitive, obsolete) To roll; revolve

Derived terms

• welter

Etymology 2

Circa 1425, a shoemaker's term. Perhaps related to Middle English welten (“to overturn, roll over”), from Old Norse velta (“to roll”). Meaning "ridge on the skin from a wound" first recorded 1800.

Noun

welt (plural welts)

1. A ridge or lump on the skin, as caused by a blow; a wheal or weal.
2. (shoemaking) A strip of leather set into the seam between the outsole of a shoe and the upper, through which these parts are joined by stitching or stapling.
3. A strip of material or covered cord applied to a seam or garment edge to strengthen or cover it.
4. In steam boilers and sheet-iron work, a strip riveted upon the edges of plates that form a butt joint.
5. In carpentry, a strip of wood fastened over a flush seam or joint, or an angle, to strengthen it.
6. In machine-made stockings, a strip, or flap, of which the heel is formed.
7. (heraldry) A narrow border, as of an ordinary, but not extending around the ends.
8. A feature resembling a welt.

Translations

Verb

welt (third-person singular simple present welts, present participle welting, simple past and past participle welted)

1. To cause to have welts, to beat.
2. To install welt (a welt or welts) to reinforce.

Translations

Etymology 3

Verb

welt (third-person singular simple present welts, present participle welting, simple past and past participle welted)

1. (Britain, dialect, archaic, intransitive) To decay.
2. (Britain, dialect, archaic, intransitive) To become stringy.

Related terms

• wilt

Dutch

Pronunciation

• Rhymes: -?lt

Verb

welt

1. second- and third-person singular present indicative of wellen
2. (archaic) plural imperative of wellen