Spinescence is a word that refers to the presence of spines or thorns on a plant. The spelling of this word follows the phonetic transcription: /ˈspaɪnɛsəns/. The first syllable 'spine' is pronounced with a long 'i' sound followed by 'n', and the second syllable 'scence' is pronounced with a soft 's' sound followed by the 'əns' sound. This word is often used in botany to describe the physical characteristics of a plant, particularly in relation to its growth and adaptation.