Born in Yonkers, N.Y., he prepped at Western Reserve Academy in Hudson, Ohio. At Princeton Dex studied aeronautical engineering. He graduated in January 1943 with highest honors and was elected to Phi Beta Kappa. He was chairman of Princeton’s student branch of the Institute of Aeronautical Sciences, manager of the Student Bicycle Agency, and worked with the student tutoring association.

Before graduation, Dexter was engaged to the love of his life, Barbara French Beranger of New York City, whom he married April 3, 1943. After three years as a naval officer in World War II, Dex and Barbara returned to Princeton, where he earned a master’s degree.

Dex worked for M.W. Kellogg Co. from 1949 to 1981, living in Princeton until moving to Houston in 1970. He then served as project director for Fish Engineering and Construction Co. in Houston. Dex worked well into his 80s as a consultant to engineering companies.

In addition to raising their three children, Dex and Barbara shared interests in classical music, sailing, and dogs. Together, they opened the Qualine Kennels in Princeton, where they raised and bred cocker spaniels for many years.

Dexter was predeceased by his daughter Heather, and by his beloved wife, Barbara, in 2006. He is survived by his children, Timothy Dexter Miller and his wife, Mary Alice Williams; Hope Miller Horn and her husband, Richard; and Eve Miller Hoefle ’84 and her husband, Daniel; and nine grandchildren.