chief or principal

first in order or importance

प्राथमिक

English Usage: She attended a primary school in her childhood.

Hindi Usage: उसने बचपन में एक प्राथमिक स्कूल में पढ़ाई की।

a medical condition characterized by an accumulation of cerebrospinal fluid within the brain

हाइड्रोसेफालस

English Usage: The child was diagnosed with primary hydrocephalus shortly after birth.

Hindi Usage: बच्चे को जन्म के तुरंत बाद प्राथमिक हाइड्रोसेफालस का निदान हुआ।