I. ˈlad.ə̇s, -atə̇s noun
( -s )
Usage: often attributive
Etymology: Middle English latis, from Middle French lattis, from latte lath, from Old French, probably of Germanic origin; akin to Old High German latta lath — more at lath
1.
a. : a framework or structure of wood or metal made by crossing laths or other thin strips so as to form a network
the lattice of a window
b. : a window, door, or gate having a lattice
c. : a representation or imitation of a lattice
d. : a lattice used as the sign of an alehouse
2.
a. : a system of small intersecting diagonal or zigzag bars or angles that rigidly connect two parallel parts of a structural member
b. : a rectangle cut up into equal small rectangles by parallels to the sides
c. : a regular geometrical arrangement of points or objects over an area or in space: as
(1) : space lattice
(2) : a geometrical arrangement of fissionable material in a nuclear reactor
3. : something resembling a lattice: as
a.
(1) : narrow strips of pastry laid over a pie in lattice fashion
(2) : potato slices perforated in cutting to resemble latticework
lattice potatoes
b. : a decorative openwork (as of interwoven strips of leather on a shoe)
c. : a vestigial sieve plate with indefinite outlines and perforations minute or lacking
II. transitive verb
( -ed/-ing/-s )
Etymology: Middle English lattizen, from latis lattice
1. : to make a lattice of : give the appearance of a lattice to
neatly arranged in strips that latticed his baldness — Pearl Kazin
2. : to close or enclose (as an opening) with or as if with latticework
lattice a window
III. noun
: a mathematical set that has some elements ordered and that is such that for any two elements there exists a greatest element in the subset of all elements less than or equal to both and a least element in the subset of all elements greater than or equal to both