IPA: /ˌæl.tɪˈtjuː.dɪ.nəs/
KK: /ælˈtɪtʃʊdɪnəs/
This word describes something that is very high or tall, often used to refer to mountains or other elevated places.
The altitudinous mountains towered over the valley, creating a breathtaking view.
Comparative: more altitudinous
Superlative: most altitudinous
Altitudinous is formed from "altitudo" (meaning height) and the suffix "-ous" (meaning full of). The word describes something that is full of height or very high.
Think of 'altitude' which relates to height, and remember that 'altitudinous' means full of height.