integraph
Obsolete / Very rareTechnical / Historical / Specialized
Definition
Meaning
A mechanical instrument for plotting the integral of a given mathematical function.
A historical calculating device used in mathematics and engineering to automatically trace the curve representing the integral of a function defined by a plotted curve.
Linguistics
Semantic Notes
The term is specific to historical computational technology and pre-digital mathematics. It is almost exclusively encountered in historical texts about mathematical instruments or the history of computation. It is not to be confused with a modern graphing calculator or software, which performs the same function digitally.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage exist. The term is equally rare in both varieties.
Connotations
Evokes early 20th-century science and engineering. It carries a historical, almost antiquarian, connotation.
Frequency
Extremely low frequency. Likely known only to historians of science, mathematics, or computing, and in niche technical literature. It is not found in general dictionaries.
Vocabulary
Collocations
Grammar
Valency Patterns
The [engineer] used an integraph to [calculate the integral].The [function] was plotted by means of an integraph.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not applicable.
Academic
Used only in historical contexts within the history of mathematics, science, or technology. Example: 'Maxwell and others developed early integraphs for solving differential equations graphically.'
Everyday
Not used.
Technical
Describes a specific class of obsolete analogue computing hardware. Example: 'The museum's collection includes a rare Coradi integraph from 1914.'
Examples
By CEFR Level
- Before computers, engineers sometimes used a machine called an integraph for complex calculations.
- The Coradi integraph, a precision instrument for graphically determining integrals, represented a significant advancement in analogue computation in the late 19th century.
Learning
Memory Aids
Mnemonic
Think of 'INTEGRal-gRAPH' – a device that draws (graphs) the integral.
Conceptual Metaphor
A PHYSICAL TRACER for a mathematical concept (the machine's arm 'follows' the idea of summation).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating it as simple 'график' (graph/chart). It is 'интегратор', 'интеграф' (a direct loanword), or 'прибор для графического интегрирования'.
- Do not confuse with 'интегрировать' in its modern software/abstract sense.
Common Mistakes
- Misspelling as 'integrapher' or 'integram'.
- Using it to refer to modern digital tools.
- Incorrect pronunciation with stress on 'graph' (e.g., /ɪnˈtɛɡrɑːf/).
Practice
Quiz
What is an 'integraph' primarily used for?
FAQ
Frequently Asked Questions
A planimeter is a related instrument for measuring area, often used as a core component within an integraph. An integraph is more complex, as it not only measures but also actively plots the integral curve.
They were developed and used primarily from the late 19th century up to the mid-20th century, before being rendered obsolete by digital computers.
New ones are not manufactured. They are found only in museums, private collections of scientific antiques, or occasionally at specialist auctions.
The object it describes is obsolete, and its function is now performed universally by software. The term is only relevant in historical or very specific technical discussions.