Tetra- as in tetrapod and tetrahedron.
Quad- as in quadrillion and quadrilateral
The prefix "quat" typically signifies the number four or a fourth part. It is often used in words related to quantity, such as "quadrant" (a fourth part of a circle) or "quartet" (a group of four musicians).
Illuminate and illogical start with the prefix "il-"
Words that begin with the prefix "ir" and mean "not" include irregular, irresponsible, irrelevant, and irrational.
HexagonHexadHexagramHexadicHexagonalAll of the above mean "six of something"HexahedronHexahedraAll of the above mean a "six sided shape"
it means peace calm
There is no by- prefix. Perhaps what was mean was be-. Some words starting with this are because, belittle, berate, etc.
the prefix means four
The prefix "quat" typically signifies the number four or a fourth part. It is often used in words related to quantity, such as "quadrant" (a fourth part of a circle) or "quartet" (a group of four musicians).
four or 4
The prefix flu means to flow. Some example words that use this prefix include fluid, flue, fluently, fluctuate, and flu.
The prefix doc means to teach. Some of the example words that use this prefix include docile, doctor, doctrine, and document.
Ation is not a prefix; it is a suffix. Some words with this suffix are specialization, aggravation, and alternation.
Illuminate and illogical start with the prefix "il-"
Rebell , rebellion and antebellum
if you mean what is the prefix for four there isn't one but there is a root, it is quad, if you are asking what prefixes are for they are for assiting with knowing the definition of new words or making new words with similar or related definitions If you're looking for the answer to the NY Times that appeared in some papers on 8/10 or 8/11 the answer was TETR
If you mean WHICH words, then here are some, laddie (or lassie) :P metaphor metamorphic Metagross (a Pokemon) metabolism
The prefix geo- means "Earth." Ge- is a common Germanic perfective prefix, now extinct in English except in some fossilized words such as y-clept ( "called").