It is often described as an artificial substitute for suede leather.

It included materials such as morphine, no longer considered vital because artificial substitutes have been found.

It can be described as an artificial substitute for suede leather.

Crop milk produced by parent birds may occasionally be replaced with artificial substitutes.

They are deposited on an overhanging leaf, or, in the aquarium, an artificial substitute.

Its name comes from its intended use as an artificial substitute for ebony wood.

At the root, this was a battle between nature and a coldhearted, artificial substitute for nature.

We may be able to fashion an artificial substitute, but I believe that will only get us in the door.

Only a few years ago, scientists believed that transplants or artificial substitutes were all that could be used for such purposes.

Their primary recourse, aside from amputation, is either a transplant or an artificial substitute.