Macrodantin (nitrofurantoin) is an antibiotic prescribed to treat or prevent urinary tract infections. Macrodantin is available in generic form. Side effects of Macrodantin include: headache, itching, rash, nausea, upset stomach, vomiting, loss of appetite, diarrhea, rust-colored or brownish urine, or ; vaginal itching or discharge. Macrodantin should be given with food to improve drug absorption and, in some patients, tolerance.
cation-a positively charged ion. hydrogen ion-a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus. ion-a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons.
Freebase(0.00 / 0 votes)Rate this definition: Exciton. An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb force. It is an electrically neutral quasiparticle that exists in insulators, semiconductors and in some liquids.