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| a fool or simpleton; ninny. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| electrovalent bond | |
| —n | |
| Compare covalent bond Also called: ionic bond a type of chemical bond in which one atom loses an electron to form a positive ion and the other atom gains the electron to form a negative ion. The resulting ions are held together by electrostatic attraction | |
| ionic bond (ī-ŏn'ĭk) Pronunciation Key
A chemical bond formed between two ions with opposite charges. Ionic bonds form when one atom gives up one or more electrons to another atom. These bonds can form between a pair of atoms or between molecules and are the type of bond found in salts. |
A chemical bond in which one atom gives up an electron to another, thereby generating an electrical force that holds the atoms together.
Note: Many crystals are held together by ionic bonds.