What does reh stand for?

rehearsal (SAUS)

Random Evolutionary Hits

Rational Expectations Hypothesis - Economics

Rehoboth Beach - Delaware - Airport symbol (AD)

Rehoboth Beach, DE - Location identifier - FAA (FAAL)

Reina - NCIC firearms make code (NCIC)

Renin Essential Hypertension - Medicine (DMAA)

Respiration-Enhancing Hormone (SAUS)

Right End of Heart (SAUS)