#masculine root

• Andr- — A scholarly combining form placed at the beginning of a word (prefixoid), derived from the Greek 'aner, andros' (man, male), used in medical, biological, and anthropological scientific terminology to form terms related to the male sex, masculine characteristics, or specific male anatomical and physiological structures (takes the form 'andr-' before a vowel and 'andro-' before a consonant).
• Andro- — A scholarly combining form placed at the beginning of a word (prefixoid), derived from the Greek 'aner, andros' (man, male), used in medical, biological, and anthropological scientific terminology to form terms related to the male sex, masculine characteristics, or specific male anatomical and physiological structures (takes the form 'andro-' before a consonant and 'andr-' before a vowel).