Mathematical Bold Small Z 𝐳

Visual Description: The symbol is a bold, lowercase z from a mathematical font. It has thick, clean lines and compact curves. On pages and screens it stands out with a strong outline. It looks like a regular z but heavier, designed to stay legible in dense formulas and quick interfaces.

Meaning & Usage: In math the bold z marks a variable. The bold style signals emphasis or a specific role when used with other bold letters. It helps distinguish z from ordinary text and from other symbols. In calculators and apps it can name a parameter in equations and comparisons.

Historical Background: This style belongs to a broad set of mathematical alphanumeric symbols used to keep math clear in digital writing. Bold letters were added as math fonts evolved to separate variables from text. The aim is readability and consistency across topics, devices, and software without relying on color or layout changes.

Practical Use: In practice it marks a known or unknown variable in a formula. In quick UI controls you may toggle bold styling to highlight a parameter or to compare equations side by side. It helps in calculators and spreadsheets when you want emphasis without adding extra symbols. This use keeps math clear at a glance.

See our category page for related symbols.

Look‑alikes: z (U+7A).

Need styled alternatives? Try the Fancy Text tool.