Its chief focus is the sound changes that take place in morphemes (minimal meaningful units) when they combine to form words.

According to Spengler the meaningful units for history are not epochs but whole cultures which evolve as organisms.

It happened not only in neighborhoods, but also in corporate America, where the only meaningful units to management are the manager himself and his wealth.

But this is another small step toward the dissolution of the nation-state as a meaningful economic unit.

The nation state as a meaningful unit by which to understand economics is all but dead.

Entrepreneurs need money that is a meaningful unit of account and a reliable store of value.

A morpheme is defined as the minimal meaningful unit of a language.

Finally, how is it that meaningful units fit together to compose complete sentences?

Words are thought of as the smallest meaningful unit of speech that can stand by themselves.

It would be nice to have some meaningful units of measure attached to the numbers.