cosmoline

C3O1S1M3O1L1I1N1E1

noun

A substance obtained from the residues of the distillation of petroleum, essentially the same as vaseline, but of somewhat stiffer consistency, and consisting of a mixture of the higher paraffins.

Scrabble 13

Meanings

nouncosmoline (countable and uncountable, plural cosmolines)

plural cosmolines

  1. countableuncountablechemistryA substance obtained from the residues of the distillation of petroleum, essentially the same as vaseline, but of somewhat stiffer consistency, and consisting of a mixture of the higher paraffins.
verbcosmoline (third-person singular simple present cosmolines, present participle cosmolining, simple past and past participle cosmolined)

present singular third person cosmolines · participle present cosmolining · participle past cosmolined · past cosmolined

  1. To coat with cosmoline.

    Its howitzers were turned in to "ordnance and to cosmoline" on the next day, for the war in Europe was ending.

    1966, Ulysses Lee, The Employment of Negro Troops, →ISBN, page 654
    3 more examples

    With the Model 1917 tripod, the pintle should be removed from the socket from time to time, wiped clean and lightly oiled or cosmolined where there is friction between it and the socket.

    1930, The R.O.T.C. Manual, Infantry: 1st-2nd year advanced, page 178

    Now, as I understand it you testified that that would lead to the inference that they did not fear an attack and you said that they had the guns themselves there on the ships but they were cosmolined and could not fire.

    1946, United States. Congress. Joint Committee on the Investigation of the Pearl Harbor Attack, Pearl Harbor Attack: Hearings, Seventy-ninth Congress

    It told in English and German, how an American Ordinance worked, such as receiving the items, giving them numbers, assigning the storage locations, cleaning and cosmolining or applying grease to them.

    2003, John Rich, My Awakening, →ISBN

Origin

  1. Latinoleum“oil”
  2. Englishcosmoline

Probably from cosmetic + Latin oleum (“oil”).

Full word history & related roots →

Rhymes & wordplay

Anagrams

Cite this entry
APA

cosmoline. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/cosmoline

MLA

“cosmoline.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cosmoline. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “cosmoline,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/cosmoline.

Source: cosmoline on Wiktionary, CC BY-SA 4.0.