It is not a single monolithic code for all life, but rather a family of specialized codes, each tailored to a major group of organisms or context:
- Standardization– Ensures each organism has only one valid scientific name, preventing confusion from synonyms or local variations.
- Universality– Creates a shared language for biologists, taxonomists, ecologists, and other disciplines worldwide.
- Stability– Prioritizes continuity in names unless a change is absolutely necessary for clarity or accuracy.
- Priority Principle– Generally, the earliest validly published name is the correct one.
2. Major Codes
While “ICN” often refers specifically to plants, algae, and fungi, the full system includes multiple parallel codes:
- ICNafp— International Code of Nomenclature for algae, fungi, and plants
Formerly the International Code of Botanical Nomenclature (ICBN). Governs naming for plants (extant and fossil), fungi, and algae.
Overseen by the International Botanical Congress. - ICZN— International Code of Zoological Nomenclature
Governs naming for animals, living and extinct. Managed by the International Commission on Zoological Nomenclature. - ICNP— International Code of Nomenclature of Prokaryotes
For bacteria and archaea. Overseen by the International Committee on Systematics of Prokaryotes. - ICVCN— International Code of Virus Classification and Nomenclature
For viruses and virus-like agents. Managed by the International Committee on Taxonomy of Viruses. - ICNCP— International Code of Nomenclature for Cultivated Plants
Focused on naming plants in agriculture, horticulture, and forestry.
3. Key Principles Across Codes
- Binomial System(for most organisms): Scientific names consist of genus + specific epithet (e.g., Homo sapiens).
- TypificationEvery name is linked to a type specimen or illustration.
- Effective PublicationNames must be published in a recognized, permanent, and accessible format.
- Priority & ValidityFirst valid publication generally takes precedence unless superseded by conservation rules.
- LatinizationNames are treated grammatically as Latin, regardless of their original language roots.
- Enables precise global communication in science, law, agriculture, medicine, and conservation.
- Reduces costly mistakes from misidentification (e.g., in pharmacology, food safety, or biodiversity policy).
- Preserves historical continuity while accommodating new discoveries from molecular phylogenetics.
Key terms in plain language
Open a term for a concise explanation of language used on this page.
Broadband
A general term for always-on, high-speed Internet access. Broadband can be delivered over fiber, cable, DSL, fixed wireless, cellular, or satellite networks.
Cloud Computing
Computing resources—such as applications, servers, storage, or databases—delivered from remote infrastructure and scaled as requirements change.
Cybersecurity
The practices and controls used to protect identities, devices, networks, applications, and data from unauthorized access, disruption, or manipulation.
Identity and Access Management (IAM)
The systems and policies that determine who a user is, what resources they may access, and how that access is authenticated and reviewed.
API
An application programming interface is a defined way for software systems to exchange data or request functions from one another.
Artificial Intelligence (AI)
Software designed to perform tasks involving prediction, classification, generation, reasoning, or decision support. Business use still requires clear data, governance, security, and human accountability.