prefix denoting four; divided into four parts.

A prefix meaning false or spurious (e.g. pseudochalazion, pseudoglaucoma, pseudopapilloedema, etc.).

SUDO in Medical. 1. SUDO. Simplified Up-down Method. Pain, Nociception, Neurology.

Table of number prefixes in English

Hexa- comes from the Greek héx, meaning “six.” The Latin for “six” is sex, source of the combining forms sex- and sexi-, which you can learn more about at our Words That Use articles for the terms.

a combining form meaning “four,” used in the formation of compound words: quadrilateral.

Medical Definition of tonic (Entry 1 of 2) 1a : characterized by tonus tonic contraction of muscle also : marked by or being prolonged muscular contraction tonic convulsions. b : producing or adapted to produce healthy muscular condition and reaction of organs (as muscles)

prefix micro-

nulli

The English prefixes syn- along with its variant sym-, derived from Greek, mean “together.” You can remember syn- easily by thinking of synonym, which is a word that goes “together” with another word because it has a similar meaning.

tachy

Para- (prefix): A prefix with many meanings, including: alongside of, beside, near, resembling, beyond, apart from, and abnormal. For example, the parathyroid glands are called “para-thyroid” because they are adjacent to the thyroid. For another example, paraumbilical means alongside the umbilicus (the belly button).

PROTO

Contracted “Dr” or “Dr.”, it is used as a designation for a person who has obtained a doctorate (e.g., PhD). In many parts of the world it is also used by medical practitioners, regardless of whether they hold a doctoral-level degree.