原点 (yuán diǎn) — (mathematics) origin (the starting point of a c…

Definition

noun

(mathematics) origin (the starting point of a coordinate system)

Measure word · 个

，原点(0,0)。
Zài píng miàn zhí jiǎo zuò biāo xì zhōng, yuán diǎn shì (0, 0).
In a plane rectangular coordinate system, the origin is (0, 0).
原点，A。
Cóng yuán diǎn chū fā, xiàng yòu yí dòng sān gè dān wèi jiù dào le diǎn A.
Starting from the origin, move three units to the right to reach point A.
原点。
Hán shù tú xiàng jīng guò yuán diǎn.
The function graph passes through the origin.

Compound word

构词法gòucífǎ

偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

原 means original and 点 point, so it is the starting point.

Characters in this word

Two or more meaningful parts placed together so that their meanings combine into a new one.

原 combines 泉 (spring) and 厂 (cliff), picturing a spring bursting from a cliff-side, which gives the sense of origin or source.

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 點; 点 is its simplified writing.

黑占點

Meaning part形符xíngfú

黑黑hēiblack

Sound part声符shēngfú

占

占zhàn點diǎn(r)

The sound has drifted apartThe sound part was a clue two thousand years ago — it often still helps, but not always.

The traditional form 點 pairs 黑 (black) with 占 for its sound; the simplified 点 is a later abbreviation.

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