Source : Webster's Revised Unabridged Dictionary (1913)

Scintilla \Scin*til"la\, n. [L.]
   A spark; the least particle; an iota; a tittle. --R. North.

Source : WordNet®

scintilla
     n 1: a tiny or scarcely detectable amount [syn: {shred}, {whit},
          {iota}, {tittle}, {smidgen}, {smidgeon}, {smidgin}, {smidge}]
     2: a sparkling glittering particles