Prefix | Meaning | Example
------- | -------- | --------
uni- | one | unicycle, unilateral
bi- | two | bicycle, bilateral
tri- | three | triangle, tripod
quadri- | four | quadrilateral, quadruped
quinque- | five | quintet, quinquennial
sex- | six | sextet, sextuple
septi- | seven | septet, septuagenarian
octo- | eight | octagon, octopus
noni- | nine | nonagon, nonagenarian
deci- | ten | decimal, decathlon
Note:
* These prefixes are often used to form words related to numbers, such as geometric shapes, musical groups, and time periods.
* Some prefixes may have different forms depending on the word they are attached to, for example, "bi-" can become "bin-" or "bis-".
* There are also prefixes for higher numbers, such as "undec-" for eleven, "duodec-" for twelve, and so on. However, these are less commonly used.