This list includes 11 Prefixes that start with Z, ranging from “zebi-” to “zymo-“. Most are short, often specialized, and come from Greek, Latin, or scientific naming systems used in medicine and science.

Prefixes that start with Z are compact word-beginnings you attach to roots to form technical and descriptive terms. Notably, forms like “zyg-” and “zymo-” appear in biology and chemistry, showing Greek influence on scientific vocabulary.

Below you’ll find the table with Prefix, Origin, Meaning, and Example words.

Prefix: Shows the prefix itself so you can identify the exact form used at the start of words.

Origin: Gives the root language so you understand its history and related word families.

Meaning: Provides a concise definition in three to seven words to help you build or interpret terms.

Example words: Lists two to four real words using the prefix so you see how it changes word meanings.

Prefixes that start with Z

PrefixOriginMeaningExample words
zo-Greekanimal; relating to animalszoology, zooplankton, zoophagy
zoo-Greekanimal; relating to animalszoogeography, zootherapy, zoobank
zoon-Greekanimal (organism); life-formzoonosis, zoonotic, protozoon
zyg-Greekyoke; joined, pairedzygote, azygous, zygoma
zygo-Greekyoke; joined, pairedzygomatic, zygodactyly, zygomorphic
zym-Greekfermentation; enzyme-relatedzymology, zymotic, zyme
zymo-Greekfermentation; enzyme-relatedzymogen, zymogram, zymography
zepto-SI (modern)10^-21 (metric prefix)zeptosecond, zeptoliter, zeptogram
zetta-SI (modern)10^21 (metric prefix)zettabyte, zettawatt, zettahertz
zebi-IEC (modern)binary prefix 2^70 (≈1.18×10^21)zebibyte, zebibit, zebibyte-per-second
zero-Italian/Arabic (modern)zero; absence, nonezero-sum, zero-day, zero-point

Descriptions

zo-
General combining form from Greek zoon “animal”; very productive in biology and everyday compounds like zoo- words.
zoo-
Orthographic variant of zo- often used where the double-o is retained; common in biological and popular compounds (zoo- park sense also shares form).
zoon-
A bound combining form from Greek zoon, frequent in medical and biological terms referring to animals as organisms or disease sources.
zyg-
From Greek zygon “yoke”; appears in anatomy and genetics to signal pairing or joining, often in technical registers.
zygo-
Variant combining form used before vowels; common in biology and morphology to denote fusion or paired structures.
zym-
From Greek zymē “leaven, fermentation”; appears in scientific and historical contexts about enzymes and fermentation processes.
zymo-
Alternative combining form often used in biochemical terminology; moderately technical and productive in scientific naming.
zepto-
Official SI prefix introduced for very small scales; used mainly in scientific and technical contexts (physics, chemistry).
zetta-
Official SI prefix for very large quantities; increasingly common in computing and data-storage vocabularies.
zebi-
IEC binary prefix (Zi-) for powers of two; used in computing to distinguish from decimal SI prefixes.
zero-
Numeric combining form from modern European languages; used in compounds to signal null value or absence (informal to technical usage).
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