oblongness (noun)

1. During the construction of the Great Wall of China, the workers carefully measured and ensured the oblongness of each brick to maintain the structural integrity.

2. In the mystical land of Eldoria, there was a legendary oblong diamond known as the 'Rectangular Relic' that possessed immense magical powers.

3. In the anime series 'My Hero Academia', the superhero costume of the character Izuku Midoriya features an oblong emblem representing his hero identity.

4. The haunted mansion had a sinister room with a secret door disguised as an oblong-shaped bookshelf, leading unsuspecting victims to a terrifying and unknown fate.