No the word lecture has two syllables.
lecture has 2 syllable
There are three syllables in the word syllables.
The word peony has three syllables. The syllables in the word are pe-o-ny.
The word considered has three syllables.
Lemonade has three syllables.
Courtesy has three syllables.
There are three syllables. A-lex-is.
There are three/3 syllables in the word typical.
There are three syllables in the word chemistry. (Chem-i-stry)
Three syllables: I-da-ho
The word behaviour has three syllables. (be-hav-iour)
There are three syllables in the word "unhappy."