Meir Weiss was born on July 18, 1954 in Jerusalem to Sara and Rabbi Avraham Yehuda, who had lost his wife and daughter in the Holocaust and had settled in Toronto, Canada. Meir completed his elementary and high school studies at the United Talmud Torah in Toronto. He begged his parents to send him to Israel and finally persuaded them when he was 15 years old. He studied at the Netiv Meir Yeshiva in Jerusalem and passed his bagrut exams.
He tried to join the army at the age of 17 but was refused and, instead, he helped found the Field School Argaman in the Jordan Valley.
Meir was drafted into the IDF in November 1972 and served in the Paratroopers. During the Yom Kippur War he fought in Sinai and on October 17, 1973, during the battle for the Egyptian 'Chinese Farm' he was killed. Meir was buried in the Mt. Herzl Military Cemetery in Jerusalem.