Pronunciation: [hˈɑːd az ˈa͡ɪvəɹˌi] (IPA) 
The phrase "hard as ivory" can be pronounced as /hɑrd əz ˈaɪvəri/. The word "hard" is spelled as expected, but "ivory" contains a few exceptions to English spelling norms. The "i" is pronounced as a long "i" sound, represented by the IPA symbol /aɪ/. The "o" is pronounced as a short "ə" sound, like the first syllable of "about." Finally, the "y" is pronounced as a long "ē" sound, like the "ee" in "flee."
"Hard as ivory" refers to an object or material that possesses extreme hardness and density, comparable to that of ivory. Ivory, which is derived from the tusks of elephants and other animals, is renowned for its exceptional durability and strength. The phrase "hard as ivory" is often used metaphorically to describe something that is exceptionally rigid, unyielding, or unbreakable.
In a literal sense, when we say something is as "hard as ivory," we are indicating that it is extremely difficult to scratch, chip, or break. It suggests an object's solid construction and resistance to damage. This metaphorical comparison is commonly employed to emphasize the sturdiness and toughness of various substances or structures. For instance, a tool or instrument made from a particularly durable metal alloy may be described as "hard as ivory" due to its remarkable strength and resilience.
Moreover, the phrase can also encompass the idea of something being tough or unyielding in its nature or character. For example, an individual described as "hard as ivory" may possess an unwavering determination, perseverance, or resolve in facing challenges or adversity. It implies a resolute and unbreakable spirit that refuses to succumb under pressure or difficult circumstances.
Overall, "hard as ivory" represents an attribute of great hardness, durability, and strength, whether literal or metaphorical, emphasizing an object's physical robustness or an individual's strong-willed nature.
Eburnated.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
