【化】 hemiformal
half; in the middle; semi-
【计】 semi
【医】 demi-; hemi-; semi-; semis; ss
【经】 quasi
contract; crinkle; draw back; shrink; withdraw
formaldehyde
【化】 formaldehyde; methanal; methyl aldehyde; methylene oxide; oxymethylene
【医】 formaldehyde; formic aldehyde; methanal; methyl aldehyde