Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Chemistry A substance that can be crystallized.
  • noun Botany Any of various minute crystallike particles consisting of protein and found in certain plant cells, especially oily seeds.
  • adjective Resembling or having properties of a crystal or crystalloid.

from The Century Dictionary.

  • Resembling a crystal.
  • noun The name given by Professor Graham to a class of bodies which have the power, when in solution, of passing easily through membranes, as parchment-paper, and which he found to be of a crystalline character.
  • noun A protein crystal—that is, a granule of protein in the form of a crystal, differing from an organic crystal in the inconstancy of its angles and in its property of swelling when immersed in water. Such crystalloids are of various forms and usually colorless.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A body which, in solution, diffuses readily through animal membranes, and generally is capable of being crystallized; -- opposed to colloid.
  • noun (Bot.) One of the microscopic particles resembling crystals, consisting of protein matter, which occur in certain plant cells; -- called also protein crystal.
  • adjective Crystal-like; transparent like crystal.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Any substance that can be crystallized from solution
  • noun botany One of the microscopic particles resembling crystals, consisting of protein matter, which occur in certain plant cells.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

crystal +‎ -oid

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Examples

  • What Kallatra did with Deuce's crystalloid resonators was a pallid approximation.

    The Dragon Lensman Kyle, David, 1919- 1981

  • A crystalloid, e.g. common salt, is characterized in that it passes in the dissolved state readily through membranes such as parchment paper or collodion films and also that it exhibits a rapid free diffusion.

    Nobel Prize in Chemistry 1925 - Presentation Speech 1966

  • It was very soon found that sometimes one and the same substance can occur in one case as a crystalloid and in another case as a colloid.

    Nobel Prize in Chemistry 1925 - Presentation Speech 1966

  • A colloid, on the other hand, e.g. glue, is unable to pass through such membranes and diffuses extremely slowly, in contrast to the crystalloid.

    Nobel Prize in Chemistry 1925 - Presentation Speech 1966

  • The crystalloid substance, on the other hand, completely separates in the water and forms a _true solution_ — one which is able to penetrate the partition or membrane.

    Physiology and Hygiene for Secondary Schools Francis M. Walters

  • * — The passage of materials through animal membranes, according to the principle of osmosis, is limited to crystalloid substances.

    Physiology and Hygiene for Secondary Schools Francis M. Walters

  • Simple filtration will sometimes suffice to separate the required substance; in other cases dialysis will be necessary, in order that crystalloid substances may be separated from colloid bodies.

    Aids to Forensic Medicine and Toxicology

  • The philosophers call it crystalloid, for it taketh suddenly divers forms and shapes of colours as crystal doth.

    Mediaeval Lore from Bartholomew Anglicus Robert Steele 1902

  • Cavities can be partly filled with tin and completed with sponge, fibrous, or crystalloid gold, after the manner described for beginning with tin and finishing with gold foil.

    Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

  • That eminent chemist was the first who drew attention to the distinction which may be made of all substances into two classes, termed by him crystalloids and colloids; or rather, of all states of matter into the crystalloid and the colloidal states, for many substances are capable of existing in either.

    A System Of Logic, Ratiocinative And Inductive John Stuart Mill 1839

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