Ionic substances form giant ionic lattices lattice: A lattice is a regular grid-like arrangement of atoms in a material. containing oppositely charged ions. They have high melting and boiling points, and conduct conduct: To allow electricity, heat or other energy forms to pass through.
Show popularity chart. Dejah is a contemporary respelling of the French word dÃ©jÃ . The name Deja is usually found in the French phrase dÃ©jÃ  vu (already seen). DÃ©jÃ  vu is an expression which refers to the feeling that someone has already experienced what is currently happening.
(also avant garde, avantgarde); French, literally advance guard (see avant + guard (n.)). Used in English 15c.-18c. in a literal, military sense; borrowed again 1910 as an artistic term for pioneers or innovators of a particular period.. Also used around the same time in communist and anarchist publications.