Antonie van Leeuwenhoek

If any person examines by the microscope that part towards the extremity of the spider's body from whence its thread proceeds, he will observe the spot to be, as it were, surrounded by five several protuberances or risings, each ending in a point and altogether forming a kind of enclosure.

Dutch Scientist

Imagine a physical object that has a noticeable part standing out.

Visualize Shape

Protuberances can be both natural and man-made.

Not Always Natural

Use 'protuberance' when the outward part is unusual or unexpected.

Context of Appearance

When used medically, it often suggests an abnormal growth.

Health Implications

In medicine, a protuberance may warrant further examination or treatment.

Cause for Concern

Use specific adjectives to describe its size, shape, or sensation for clarity.

Physical Description

In geography, it describes natural formations that stand out from surroundings.

Geographic Features

These natural protuberances may be dangerous to climb without proper equipment.

Explore Safely

Use 'protuberance' in academic writing to describe physical geography.

Academic Usage

 within the ambit of so-called rational vaccine design. Let me give you another example. We talked about before the H and N spikes on the surface of the flu virus. Notice these other, smaller protuberances. These are largely hidden from the immune system.

Seth Berkley: HIV and...

 the ambit of so-called rational vaccine design let me give you another example we talked about before the h and n spikes on the surface of the flu virus notice these other smaller protuberances these are largely hidden from the immune