Heard spelling

andreecium

Spelled androecium. a Latin vowel pair

The middle of the word is oe, not ee.

Latin transcribed a Greek diphthong as oe, and English reads it as a plain ee, which is exactly why people write one.

Greek oi became Latin oe, and Latin oe became an English ee. Two steps, and by the end of them nothing in the letters explains the sound. Amoeba, phoenix and oesophagus all carry the same pair with the same result.

Say

an-DREE-see-um

Letters

A-N-D-R-O-E-C-I-U-M