Smooth

Glatt is a geographical name:

Locations:

Waters:

Glatt (Neckar) , left tributary of the Neckar in Neckarhausen, town of Horb am Neckar, Freudenstadt district
Glatt (Rhine) , left tributary of the Rhine near Rheinsfelden, municipality of Glattfelden, Bülach district, canton of Zurich
Glatt (Thur) , right tributary of the Thur near Oberbüren, constituency Wil, canton Sankt Gallen
Jenneckes Glatt , lake near Rheinberg, Wesel district, North Rhine-Westphalia

Glatt is a family name:

Adolf Glatt (1899–1984), Swiss sculptor and painter
Karl Glatt (1912–2003), Swiss painter and draftsman
Max Glatt (also: Max Meier Glatt; 1912–2002), British psychiatrist and addiction expert of German origin
Volkan Glatt (* 1982), German-Turkish soccer player

Glatt is part of the company's name:

Glatt group of companies , a plant manufacturer in the field of processing and refining powdery solids (Binzen, Germany)
Glattzentrum , a shopping center in Wallisellen in the canton of Zurich

smooth , adjectival attribute, or smoothness , associated noun abstraction, denote:

in materials science, the surface quality, see the counter-term roughness
In road safety, icy or snow-covered roads, see winter slippery
in analysis an arbitrarily often differentiable function, see smooth function
a continuously differentiable curve in differential geometry, see smooth curve
in differential topology a special class of manifolds, see differentiable manifold
In number theory, a smallness requirement for the prime divisors or prime divisor powers of a number, see smooth number

See also:

Wiktionary: smooth - explanations of meanings, word origins, synonyms, translations