infix notation: a notation for forming mathematical expressions using parentheses and governed by rules of operator precedence; operators are dispersed among the operands
mathematical notation: a notation used by mathematicians
sarcoscypha coccinea: a discomycete that is a harbinger of spring; the fruiting body is thin and tough and saucer-shaped (about the size of quarter to a half dollar) with a deep bright red upper surface and a whitish exterior