הִתְאַקְּלְמוּת (hit'aklemut) — acclimatization

Etymology

The word הִתְאַקְּלְמוּת is a five-generation etymological journey: from Greek through Arabic through medieval Hebrew through modern Hebrew. The ancient Greek verb kleio meant "to incline/slope." From it Greek derived the noun klima (inclination, slope), used geographically. Aristotle in his Meteorology divided the spherical earth into seven klimata (slopes/bands): two frozen at the poles, two temperate, and one hot at the equator. The word gradually came to mean a geographical zone in general, and later its characteristic weather.

At the turn of the 8th–9th centuries, the Syrian scholar Ibn al-Batriq translated Greek scientific works — including texts by Ptolemy and Aristotle containing the concept of klima — into Arabic. Arabic does not tolerate words beginning with a shwa sound, and in such cases naturally adds a prosthetic alef at the start. The result was the Arabic word iqlīm. (The same prosthetic alef appears in many Hebrew borrowings from Greek during the rabbinic period, such as iztadyon from stadion, akhsanya from xenia, and iztrobal from strobilus.)

Around 350 years later, Judah Halevi wrote his masterwork the Kuzari in Arabic. When Judah ibn Tibbon translated the Kuzari into Hebrew to make it accessible to European Jews who could not read Arabic, he encountered the Arabic iqlīm with no Hebrew equivalent and did what Ibn al-Batriq had done before him — he simply transliterated it, producing the Hebrew אַקְלִים. By the 16th century, advances in geography shifted the word's meaning across European languages from "one of the seven ancient geographic bands" to "a region characterized by its weather," and this shift reached Arabic and Hebrew under European influence in the late 18th or early 19th century, giving אקלים its modern meaning.

The noun הִתְאַקְּלְמוּת was coined from this base in the early days of the Hebrew revival in Palestine. In 1897, in Ben-Yehuda's newspaper HaTzvi, a letter from a reader named Yaakov Tsuzmer asked for European translations of new Hebrew words to help readers; David Yudlevitz, a Bilu pioneer and teacher at the first Hebrew school in Rishon LeZion, responded in the next issue with a list of new words and their German and French equivalents — among them the word "התאקלמות." The word took root and is entirely standard in modern Hebrew.

Key Quotes

"אַבְרָהָם סְגֻלַּת עֵבֶר... מִפְּנֵי שֶׁהוּא יוֹרֵשׁ הָאַקְלִימִים הַשָּׁוִים אֲשֶׁר אֶמְצָעִיתָם וְחֶמְדָּתָם אֶרֶץ כְּנַעַן" — Judah ibn Tibbon's Hebrew translation of the Kuzari, c. 1167

Timeline

• c. 350 BCE: Aristotle uses klima in Meteorology to describe geographic zones
• c. 800 CE: Ibn al-Batriq transliterates klima as iqlīm in Arabic translations of Greek texts
• c. 1139: Judah Halevi uses iqlīm in the Kuzari (in Arabic)
• c. 1167: Judah ibn Tibbon transliterates it as אַקְלִים in his Hebrew translation
• 16th century: "Climate" begins to mean regional weather in European languages
• Late 18th–early 19th century: Same semantic shift reaches Arabic and Hebrew
• 1897: David Yudlevitz documents הִתְאַקְּלְמוּת in HaTzvi
• 20th century: Word fully established in standard Hebrew

Related Words

• אקלים — climate, region (the base noun)
• מזג אוויר — weather
• הסתגלות — adaptation (a related modern word)
• קלימטולוגיה — climatology