| mirror image dextrocardia | Perfect right to left congenital reversal of the heart sometimes with other congenital abnormalities, sometimes normal except for position. (05 Mar 2000) |
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| mirror speech | A reversal of the order of syllables in a word, analogous to mirror writing. (05 Mar 2000) |
| mirror, first or front surface | <microscopy> An optical mirror on which the reflecting surface is applied to the front surface of the mirror instead of to the back, that is, to the first surface of incidence. (05 Aug 1998) |
| mirror-image cell | A cell whose nuclei have identical features and are placed in the cytoplasm in similar fashion, a binucleate form of Reed-Sternberg cell often found in Hodgkin's disease; the twin nuclei are disposed in relation to an imaginary plane between them like a single nucleus together with its image in a mirror. (05 Mar 2000) |
| mirror-writing | Writing backward, from right to left, the letters appearing like ordinary writing seen in a mirror. Synonym: retrography. (05 Mar 2000) |
| miryachit | A nervous affection observed in Siberia. See: jumping disease. Synonym: myriachit. (05 Mar 2000) |