纖

Primarily means “thin” or “fine,” especially in reference to threads, fibers, or delicate objects. It can also describe subtlety or minuteness.

In classical measurement terminology, it denotes a very small decimal unit.

A phono-semantic compound consisting of:

糸 (silk/thread) — semantic component, indicates thread, fineness, or delicacy;

韱 — phonetic component, supplying the sound (섬 / xiān).

The original sense refers to fine threads or fibers.

Semantic extensions:

- thin thread;

- fine or delicate;

- subtle; minute;

- extremely small quantity.

The thread radical reinforces the idea of fineness and minuteness.

The character appears mainly in literary or technical vocabulary.

섬세 (纖細) — delicate; meticulous

섬약 (纖弱) — frail; delicate

섬유 (纖維) — fiber

纖 emphasizes extreme thinness or delicacy compared to 細.

The character has multiple simplified forms depending on region.

Its numerical meaning reflects traditional East Asian decimal subdivision systems.

In traditional decimal units:

纖 = one-tenth of 微

Equivalent to 10⁻⁷ (one ten-millionth).

This reflects its semantic core of extreme smallness.

Related characters:

細 — thin; fine

微 — minute; subtle

絲 — silk

維 — to connect; fiber