Category: H

Not readily absorbing water, or being adversely affected by water, as a hydrophobic colloid. Water repellant; opposite of hydrophilic. This term means water hating or having a great dislike for water. It is used to describe molecules or portions of molecules that have very little or no affinity for water. The property of having an…

Readily absorbing moisture; hygroscopic; having strongly polar groups that readily interact with water. Attracted to water; water-soluble. This term means water loving or having a great affinity for water. It is used to describe molecules or portions of molecules that have an affinity for water. The property of having an affinity for water at an…

The process of cleaving a chemical compound by the addition of a molecule of water. Chemical reaction of compounds with water. A chemical reaction involving molecular breakdown by reaction with water forming acid or base or both. A chemical process in which a substance is split into simpler compounds by the addition of water. Literally,…

A strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials. A solution used as a disinfectant. Clear liquid compound (H2O2) applied in water solution to cleanse wounds and as…

The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight 1. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are protons. Besides the common H1 isotope, hydrogen exists as the stable isotope deuterium and the unstable, radioactive isotope tritium.…

Combining with water. The process of returning the body fluid levels to normal, dehydration. Process of combining with water, usually reversible; often used medically in reference to the amount of fluid intake and body fluid content—the patient’s state of hydration. A patient is well-hydrated if the normal amount if present, dehydrated if the fluid level…

Cells artificially created by fusion of activated lymphocytes with neoplastic cells. The resulting hybrid cells are cloned and produce pure or “monoclonal” antibodies or T-cell products, identical to those produced by the immunologically competent parent, and continually grow and divide as the neoplastic parent. The cell line produced by fusing a myeloma (tumor cell) with…

The genetic process of crossbreeding to produce a hybrid. Hybrid nucleic acids can be formed by nucleic acid hybridization of DNA and RNA molecules. Protein hybridization allows for hybrid proteins to be formed from polypeptide chains. The pairing (tight physical bonding) of two complementary single strands of RNA and/or DNA to give a double-stranded molecule.…

A normal functioning fluid or semifluid of the body (as the blood, lymph or bile) especially of vertebrates. A secretion that is itself an excitant of activity (as certain hormones). A fluid in the body. An archaic term once used for a theory regarding the causation of disease as due to an improper mixture in…

Of, relating to, proceeding from, or involving a bodily humour now often used of endocrine factors as opposed to neural or somatic. Refers to body fluids or substances found in them. Body fluids or the substances contained in them. Relating to human body fluids, in particular blood serum. In the realm of biological terminology, the…