The Collaborative International Dictionary of English v.0.48:

Cellular \Cel"lu*lar\ (s[e^]l"[u^]*l[~e]r; 135), a. [L. cellula
   a little cell: cf. F. cellulaire. See Cellule.]
   1. Consisting of, or containing, cells; of or pertaining to a
      cell or cells.
      [1913 Webster]

   2. porous; containing cavities.
      [PJC]

   3. pertaining to or using a system of transmission of
      telephone signals by radio, in which areas are divided
      into geographical parts (cells), each of which is served
      by a transmitter whose range is limited to that region,
      thus permitting a single transmission frequency to be used
      simulataneously in different parts of the same area.
      Cellular telephones are typically small and battery
      powered, allowing a subscriber with such a telephone to
      carry the telephone in a pocket or purse, over the entire
      area served, and to be contacted by a single telephone
      number. The system became widespread and popular in the
      1980's and 1990's; as, cellular telephones sometimes lose
      their link unpredictably.
      [PJC]

   Cellular plants, Cellular cryptogams (Bot.), those
      flowerless plants which have no ducts or fiber in their
      tissue, as mosses, fungi, lichens, and alg[ae].

   Cellular theory, or Cell theory (Biol.), a theory,
      according to which the essential element of every tissue,
      either vegetable or animal, is a cell; the whole series of
      cells having been formed from the development of the germ
      cell and by differentiation converted into tissues and
      organs which, both in plants and animals, are to be
      considered as a mass of minute cells communicating with
      each other.

   Cellular tissue.
      (a) (Anat.) See conjunctive tissue under Conjunctive.
      (b) (Bot.) Tissue composed entirely of parenchyma, and
          having no woody fiber or ducts.
          [1913 Webster]

WordNet (r) 3.0 (2006):

cellular
    adj 1: relating to cells; "cellular walls"; "cellular
           physiology"
    2: characterized by or divided into or containing cells or
       compartments (the smallest organizational or structural unit
       of an organism or organization); "the cellular construction
       of a beehive"; "any effective opposition to a totalitarian
       regime must be secretive and cellular" [ant: acellular,
       noncellular]

The Free On-line Dictionary of Computing (30 December 2018):

Cellular

    A system for cellular automaton programming by J
   Dana Eckart .  Cellular includes a
   byte-code compiler, run-time system and a viewer.

   Posted to comp.sources.unix, volume 26.

   See also Cellang.

   (2000-10-07)