the.com/malformation

A body part that developed in an atypical shape or structure, usually present from birth.

means A part of the body that developed in an abnormal shape or structure, usually from birth.

from Built from Latin male, 'badly,' plus formatio, 'a forming' or 'shaping' — the same formatio that gives us 'form' and 'format.' So malformation is just Latin for 'badly shaped,' a word that walked into English in the 1700s wearing its meaning on its sleeve, no twist required.

timing
usually happens in the first trimester
not the same
deformation reshapes normal tissue, malformation is built wrong
common culprits
genetics, teratogens, or just unlucky cell signaling
range
from harmless extra toe to major organ defect
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