Bogatyr
Number of letters: 7
Meaning: Russian medieval legend
Misspelled: bogateer
Opificer
Number of letters: 8
Meaning: A creator.
Prosopopoeia
Number of letters: 12
Meaning: A person speaking as someone or something else.
Misspelled: Prosopopoea
Radioimmunoelectrophoresis
Number of letters: 26
Meaning: A medical procedure involving a radioscope.
Psychoneuroendocrinological (27 letters)
Number of letters: 27
Meaning: Refers to a brain disorder.
spectrophotofluorometrically (28 letters),
Number of letters: 28
Meaning: A method of mining
pseudopseudohypoparathyroidism
Number of letters: 30
Meaning: A type of medical problem