Common Sleep Paralysis Causes: The Common Sleep Paralysis for most people, happens, during R.E.M. state, when the body releases hormones that paralyze the body to keep it from acting out dreams, thereby reducing any chances of physical harm during sleep.
Hybrid material. Hybrid materials are composites consisting of two constituents at the nanometer or molecular level. Commonly one of these compounds is inorganic and the other one organic in nature. Thus, they differ from traditional composites where the constituents are at the macroscopic (micrometer to millimeter) level.
Meaning: A complex polymer; the chief constituent of wood other than carbohydrates; binds to cellulose fibers to harden and strengthen cell walls of plants. Classified under: Nouns denoting substances. Hypernyms (lignin is a kind of...): polymer (a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers) Holonyms (lignin is a substance of...): wood (the hard fibrous lignified substance under the bark of trees)