polymorph


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

polymorph

[′päl·i‚mȯrf]
(biology)
An organism that exhibits polymorphism.
(crystallography)
One of the crystal forms of a substance displaying polymorphism. Also known as polymorphic modification.
(histology)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Table 1 Lattice parameters for Flabellina iodinea crystals and known polymorphs of guanine Purified from Purified from Source F.
In order to reveal the polymorph of grown CC crystals obtained in the presence of 1.0 g/L of PSDA-b-PEG solution in the crystallization reaction, XRD and FTIR-ATR were used.
Cherukuvada, Ranjit; Nangia, Ashwini Polymorphs, Pyrazinamide, Pyrazinamide polmorphs: Relative Stability and Vibrational Spectroscopy, Cryst.
For the purpose of comparison, Table 6 summarizes our results for the total-energy differences AE per formula unit for the various phases of KNb[O.sub.3], which correspond to the formation energies relative to the cubic polymorph. Although the numerical differences are generally small, we find that the rhombohedral structure is energetically favored by all exchange-correlation functionals considered in this work.
However, it is important to note that the monoclinic polymorph is just more refined model structure of type (II) [La.sub.2][O.sub.2]C[O.sub.3] [18].
In this study, pyrolysis of Ti[Cl.sub.4] at relative low temperature of 80[degrees]C in HCl aqueous solution is used to study the formation of Ti[O.sub.2] polymorphs. The effect of HCl and aging time on the Ti[O.sub.2] formation and anatase to rutile phase transition is presented and discussed.
Nonetheless, calcium carbonate aragonite polymorph recently emerges as one of the most popular targets among many scientists for profound exploration in many aspects, especially in the biomedical and pharmaceutical fields [1, 7-10, 20-22].
XRD analysis confirmed that calcite should be the dominant polymorph of CaC[O.sub.3].
In nature, zinc sulfide generally occurs in the form of the cubic polymorph sphalerite ([alpha]-ZnS), which crystallizes under a wide pressure-temperature range.
The polymorphs of amino acids are ascribed to the complex interactions between the hydrogen bonding moieties (amino and carboxy groups) and side chains, which permit the steric and electrostatic interactions that specifically form the well-ordered aggregates in the solid phase.
The polymorph CD64 should be used as a screening test for neonatal sepsis because of high sensitivity and a high negative predictive value.