大 Radical 37 — big, large; greatly
dà (fourth tone, falling)
big, large; greatly
Radical 373 strokes2 characters
Where the shape comes from
A person seen from the front, arms out and legs apart. To say "big", the script drew a human being at full stretch — the largest thing it could point to. Lay a line above the head and you have 天 the sky; put a dot underneath and you have 太 "excessively". It heads 天, 太, 头, 夫 and 奋.