actinautographic

adjective

ac·​tin·​au·​to·​graph·​ic

¦ak-tə-ˌnȯ-tə-¦gra-fik

: capable of producing a developable impression on light-sensitive material without contact

—used of substances (such as zinc)

actinautography

¦ak-tə-ˌnȯ-ˈtä-grə-fē

noun

plural -es

Word History

Etymology

actin- + autographic

First Known Use

circa 1905, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now