10-Letter Words Containing: P,E,N,L

• confusion resulting from failure to understand

• Like a sphinx, or like that of a sphinx. Especially, not showing emotion

• Mysterious; scheming; having a deceptive outward appearance

• a percussion instrument with wooden bars tuned to produce a chromatic scale and with resonators; played with small mallets

• a cephalosporin antibiotic (trade names Keflex and Keflin and Keftab) commonly prescribed for mild to moderately severe infections of the skin or ears or throat or lungs or urinary tract

• a cytokine secreted by helper T cells in response to stimulation by antigens and that acts on other cells of the immune system (as by activating macrophages)

• To form a complex with another substance

• To complicate.

• The formation of a complex; complexation