Writing Balance Rule: The left radical (弓) should be narrow and compact, leaving ample horizontal space for the right component (瓜) to expand gracefully.
1. Meaning
arc (geometry or curved line)
bow-shaped structureelectric arc
NounNeutral#geometry#physics#shape
Sample Usage
圆弧
yuánhú
circular arc
电弧
diànhú
electric arc
2. Sound
/[xu³⁵]/Tone: 35
弧
húhu2
|
++
´(35)
=hú
Build the syllable
Step-by-step blending
hu
Tone mark placement: Tone mark sits on "u" per main-vowel priority (a > e > o; in -iu/-ui the mark takes the second vowel).
Initial Consonant
h
Type: Velar Fricative
Sounds like: h sound as in 'hat'
Unaspirated
Airflow Tactile Test: Gentle throat friction (like fogging glasses on a cold day).
Tongue & Mouth Position: Back of tongue approaches soft palate to create friction without stopping airflow.
Final Rhyme
u
Vowel Group: -u vowel group
Sounds like: -oo rhymes with 'too'
Mouth Shape Guide: Pronounce as standalone vowel 'oo'.
Common Learner Trap: Keep vowel quality steady across all 4 tone contours.
Tone
T2 (35)
3 → 5 (35)
2nd Tone (Mid-Rising)
Tone Pitch & Cadence: Tone 2 rises from middle to high pitch, matching the pitch contour of a rising question in English.
👂
Listening trap: Confusing the rising Tone 2 (hú) with Tone 4 (hù), which falls sharply.
👋
Physical Tone Gesture: Tone 2 starts mid and rises sharply upward, exactly like raising your voice to ask 'Huh?' in surprise.
3. Writing
Topology: Left-right · Strokes: 9 strokes
Writing Balance Rule: The left radical (弓) should be narrow and compact, leaving ample horizontal space for the right component (瓜) to expand gracefully.
4. Components
Radical弓 · Bow Radical (bow (weapon or curved tool))
Semantic Clue (形旁):弓 (indicates the curved bow shape related to an arc)
Phonetic Clue (声旁):瓜 (original sound: gua / hu)
A curved bow (弓) combined with the melon-shaped or phonetic element (瓜) creates an arc shape.
弓 bow, curve
瓜 melon shape / phonetic cue
Phonetic Family (形声字家族)
7· Phonetic Root: 瓜 (guā)
5. History
Liushu category: Phono-semantic (形声)
Origin: Originally formed by combining 弓 (bow) to denote curvature and 瓜 (melon) to provide the phonetic sound, signifying a curved trajectory or geometrical arc.
Semantic Evolution: Transited from physical archery bows and curved objects to abstract mathematical arcs and physics concepts like electric arcs.
The bow radical has consistently represented curved implements across Chinese writing history.
6. Sinosphere
🇻🇳
Sino-Vietnamese
hồ
Mandarin rising tone 2 corresponds closely to Vietnamese hỏi or sắc depending on historical derivation, here matching an upward inflection.
🇯🇵
Kanji (Japanese)
On: コ (ko)
🇰🇷
Hanja (Korean)
호
Sound Shift Bridge: The initial h- sound and ending vowel -u parallel similar roots in other languages, though 弧 is uniquely East Asian.
7. Memory
Vivid Mnemonic Story
Imagine an archer stretching a flexible bow (弓) into a perfect curved arc while aiming at a hanging melon (瓜).
Phonetic Family (形声字家族)
瓜
guāmelonPhonetic Core (声旁)
孤
gūlone, lonely+ 子 (child)
呱
gūused in 呱呱[gu1 gu1]; Taiwan pr. [wa1]+ 口 (mouth)