# subsubdomain
## English
### Etymology

From sub- +‎ subdomain.

### Pronunciation

* Rhymes: -eɪn

### Noun

subsubdomain (plural subsubdomains)
* A subdomain of a subdomain.
** 1990, Donnalyn Frey, Rick Adams, !%@:: a Directory of Electronic Mail Addressing and Networks, O’Reilly & Associates, →ISBN, page 90:Top-level domain: DE (Germany) / Internet: user@subsubdomain.subdomain.dbp.DE
** 1993, Robin Ray Gutell, “The Informational Molecules”, “Evolutionary Characteristics of 16S and 23S rRNA Structures”, in H. Hartman, K. Matsuno, editors, The Origin and Evolution of the Cell (Proceedings of the Conference on the Origin and Evolution of Prokaryotic And Eukaryotic Cells), World Scientific, →ISBN, page 251:*level 3 -- Subdomain level: Chloroplast higher plants. lower plants. / *level 4 -- Subsubdomain level: (eu)bacteria - Purple photosynthetic bacteria. α bacteria. β bacteria γ bacteria. δ bacteria. / *level 4 -- Subsubdomain level: etc. etc.
** 1994, Tomoko Hamada, Willis E. Sibley, editors, Anthropological Perspectives on Organizational Culture, University Press of America, →ISBN, page 164:• All letters capitalized = theme / • First letter of word capitalized = domain / • Underlined = subdomain / • Italics = subsubdomain
** 1996, Byeong Gi Lee, Minho Kang, Jonghee Lee, Broadband Telecommunications Technology, 2nd edition, Artech House, →ISBN, page 408:In the previous example, the host’s top-level domain is kr, its subdomain is ac.kr, and its subsubdomain is snu.ac.kr, with the name of the actual host being tsp7.snu.ac.kr.
** 1996, Computational Methods in Applied Sciences ‘96, John Wiley & Sons, →ISBN, page 45, column 2:The basic idea is as follows: Local refinement of the material description is accomplished by inducing a paratition of Ω into subdomains, estimating the error in each subdomain, then uniformly repartitioning the corresponding subdomain into “subsubdomains”, if the local error is estimated to be intolerable. The elasticity is then reaveraged locally over each “subsubdomain” in a […]
** 2000, Robert T. Gorman, Streetwise Get Your Business Online: How to Conceptualize, Design and Build an Effective Business Web Site in Less Than 30 Days, Adams Media Corporation, →ISBN, page 167:[…] seen advertisements to “publish your own Web site for free.” / Unfortunately, as briefly mentioned earlier, in order to take advantage of these offers, you will have to include the service’s top-level domain as part of your online business name. In other words, your online business name will be a subsubdomain to the service provider.
** 2002, Annals of the University of Craiova, “3. Concept-Scheme Indexing”, page 218:In the Concept-Scheme Indexing Algorithm, considering that CI would like to capture concepts that are present in a large number of documents, we identify the large concepts as nodes in a tree of domains. Each concept represent a domain, subdomain, subsubdomain, etc.
** 2004, Jeremy Aaron Horwitz, Applications of Cayley Graphs, Bilinearity, and Higher-order Residues to Cryptology, Stanford University Press, page 48:In general, an adversary should not be able to decrypt a message encrypted for a particular user in a particular domain (and subdomain, subsubdomain, etc.), even if they have access to the private key of every other user and of every other domain (and subdomain, subsubdomain, etc.), in addition to information obtained from a decryption oracle.
** 2005, Irene Moulitsas, “Chapter 3. Partitioning Algorithms for Simultaneously Balancing Iterative and Direct Methods”, in Graph Partitioning for Scientific Computing Applications, University of Minnesota Press, “3. Separator Refinement Algorithm”, pages 40, 42, 43:Instead, the proposed partitioning refinement algorithm tries to move vertices that are at the separators of an overweight domain to one of the adjacent subdomains, which reduces the size of the separator S and ensures the subsubdomains (e.g., A and B in the previous example) remain disconnected. […] In order to ensure that A and B remain balanced we set the maximum subsubdomain weight not to be more than 10% above the average. […] Therefore, we do not allow separator vertices to move to a partition if this move will increase the partition weight, or the subsubdomain weight above our preset limits.
** 2009, Brent Douglas Galloway, “Introduction”, “Labels used for each different type of information”, in Dictionary of Upriver Halkomelem, volume I, University of California Press, →ISBN, page xxxiii:VOIC voice (active, middle reflexive, reciprocal, passive)(subdomain) / WATR water features and functions / WETH weather features and functions / WV weaving (techniques, devices, parts, dyeing, designs, functions) (subsubdomain)

#### Related terms

* subsubpopulation
* subsubsection
* subsubspecies
* subsubtype